B1 ; có 3 vòi nước chảy vào một cái bể không có nước . Nếu mở riêng từng vòi thì vòi thứ nhất chảy trong 3 giờ , vòi thứ 2 chảy trong 4 giờ, vòi thứ 3 chảy trong 5 giờ , Hỏi : 

a, trong 1 giờ mỗi vòi chảy được mấy phần của bể 

b, Trong 1 giờ cả ba vòi cùng chảy thì  đc mấy phần của bể

đọc và trả lời câu hỏi sau 

There are two main kinds of sports : team sports and individual sports . Team sports are such sports á baseball , basketball and voleyball . Team sports require two separate teams . The teams play against each o ther . They compete against each other because they want to get the best score . For example , in a football game, if team A scores 4 goals and team B scores 3 goals , team A wins the game . Team sports are sometimes called competitive sports.

1. Are there three main kinds of sports ? 

- 

2. How many teams do team sports require ?

-

3. why do two separate teams compete against each other ?

-

choose the correct answer A , B , C, or D to complete the passage

People need to breathe . If they don 't breathe, they { 1} { A. won't / B. are / C. must / D. will } die . But how clean is the air people breathe ? If they breathe  { 2 } { A. clean/ B. fresh/ C. dirty/ D. cleaner } air , they will have breathing problems . Plants and animal need { 3 } { A. clean / B safe / C. dirty / D. polluted } air too . A lot of the things in our lives create harm ful gases and { 4 } { A. make / B. get/ C. give / D. made } the air dirty , like cars , motorbikes, and factories . dirty air is called polluted air . Air pollution can also make our Earth warmer .

1. Walking to school will help .......... air pollution { A. reduce / B . reuse / C. recycle / D. refill }

2 . My sister ........... home for school yet . { A . didn't leave / B . hasn't left / C. don't leave / D. isn't leaving ]

3. ........... the film is late, I will wait to watch it { A. because/ B. When/ C. But/D. Althought

4. My father first ........... Da Lat in 2010 { A. visited/ B. went /C. go/ D . been }

5. If the weather ............ good, I ......... camping with classmate . { A. is / will go //  B. is / go // C.Will be/ go // D. will be / will go  }

6. Which one is different ? { A. boxing B. cycling C. telling D. skiing }

viết lại câu với nghĩa ko đổi 

1.

My brother can run very fast

- my brother is .............................

2.

Nga likes badminton best

- Nga ' s favourite.....................

chia động từ 

If it { Be } ............  nice tomrow  , we  { go } ........... on a picnic

......... you ever { see } .............. a real robot ?

Chia động từ và giải thích

Hoai Linh is a famous { comedy } ................ in Viet Nam

Water { pollute } ...................... makes fish die

It is a { reuse} ........................ shopping bag

Nam is very { sport } ................................ he plays many kinds of sports