He said, "My wife has just bought a computer."

He said that his wife had just bought a computer.

He said that my wife had just bought a computer.

 He said that his wife has just bought a computer.

"I will come there as soon as I am ready", she said to Quang.

She said to Quang he will come there as soon as he I am ready.

She told Quang she will come there as soon as she was ready.

She told Quang she would come there as soon as he was ready.

She told Quang she would come there as soon as she was ready.

"I met him yesterday" she said.

She said to me I met him the day before.

She told me she met him yesterday.

She told me she had met him yesterday.

"How brave you are!" My mother said to me.

My mother praised me for my courage.

My mother blamed me for my discouragement.

My mother criticized me for my discouragement.

I asked Mary               to study abroad.

A.are you planning     B. if she is planning

C. was she planning    D. if she was planning

Lan:" Why don't you study hard for the exam, Nam?"

A.                              Lan advised me not to study hard for the exam

B.  Lan advised me to study hard for the exam

C.  Lan advised Nam not to study hard for the exam

D.  Lan advised Nam to study hard for the exam.

He asked his mother what                                               .

A.  time was it                             B. time is it

I asked her                              , but she said nothing

A.  what the matter was              B. what was the matter

She asked me                          I                    or not.

A.  If / had busy                          B.Whether / was busy

C. If / has been busy                  D. Whether / busy

Minh  him up when the bus came there.

A.  told her wake                        B. asked her to wake

I wonder                          we'll catch the bus                we'll walk to school.

A.  if / and whether                     B. whether / or that

"I'll tell you about this tomorrow, Daisy." said Peter.

A.  Peter said to Daisy that he will tell her about that the next day.

B.  Peter told Daisy that I would tell you about that the next day.

C.  Peter told Daisy that he would tell her about that the next day.

Mr Ha told me that he would meet me the                              day

"I wrote to her yesterday." He said

A.  He said to me I wrote to her the day before.

B.                              He told me he wrote to her yesterday.

C.  He told me he had written to her yesterday.

"He is talking to your sister", Lan said to me.

A.  Lan told me he was talking to your sister.

B.  Lan told to me he was talking to my sister.

C.  Lan told me he was talking to my sister.

D.  Lan told me she was talking to her sister.

Màu sắc thân rắn ngô do 2 cặp gen O,o và B,b quy định. Kiểu gen có 2 gen trội O và B cho kiểu hình thân màu nâu, kiểu gen chỉ chứa gen trội O cho kiểu hình màu cam, kiểu gen chỉ chứa gen trội B cho kiểu hình màu đen và kiểu gen không có alen trội nào cho kiểu hình bạch tạng. Cho 1 con rắn màu cam lai với 1 con màu đen, quan sát một lượng lớn các cá thể $F_1$, tất cả chúng đều có màu nâu. Cho rắn $F_1$ lai với 1 cá thể khác (X) sinh ra rắn con ($F_2$) gồm 100 con màu nâu, 25 con màu cam, 22 con màu đen và 13 con bạch tạng. Theo lý thuyết có bao nhiêu phát biểu đúng

I. Rắn ${\mathrm{F}}_1$ dị hợp tử 2 cặp gen

II. Nếu cho rắn $F_1$ lai phân tích thì tỉ lệ kiểu hình ở đời con là 1:1:1:1

III. Có 2 kiểu gen khác nhau quy định kiểu hình màu cam

III. Kiểu gen của cá thể X  giống kiểu gen của rắn $F_1$

Mai said that "I haven't seen Tuan since last month."

A.  Mai said she doesn't see Tuan since the previous month.

B.  Mai said she wasn't seen Tuan since the previous month.

C.  Mai said she hasn't seen Tuan since the previous month.

D.  Mai said she hadn't seen Tuan since the previous month.

"Don't make noise because I am doing my homework now"

A.  He asked me not to make noise because I am doing my homework now.

B.  He asked me not to make noise because I was doing my homework then.

C.  He asked me not to make noise because he was doing his homework then.

Biện pháp trồng rừng có hiệu quả chính nào sau đây?

A. Góp phần bảo vệ các hệ sinh thái quan trọng, bảo vệ nguồn gen sinh vật

B. Góp phần bảo vệ tài nguyên rừng

C. Phục hồi các hệ sinh thoái đã bị thoái hoá, chống xói mòn, tăng nguồn nước

D. Giáo dục ý thức bảo vệ môi trường của người dân