Tom has a computer,               he doesn't use it.

A.  or                     B. as                     C. because                      D. but

      Nam was absent from class yesterday               he felt sick.

A.   so                     B. because                      C. although          D. but

    It's raining hard,          we can't go to the beach.

A.  or                     B. but                             C. so                     D. though

   she was very tired, she helped her brother with his homework.

  Mai studied hard,               she passed her exam.

A.  so       B. although                                 C. because            D. though

His doctor suggested that he              a rest.

 It is imperative that the world                to find a solution to global warming.

  It is necessary that a life guard              the summing pool while the children are taking their swimming lessons.

The law requires that everyone         his car checked at least once a month.

They required that each member             twenty-five dollar.

  I'd rather my teacher             me fewer compositions tonight.

 It's high time the children             their lesson. It’s 8 p.m now.

The chairman moved that the meeting            postponed.

 I think it's an interesting fact that she              from Japan.

She told me that he                       back.

  I propose that we all                  together so that nobody gets lost along the way.

 It is important to remember that Lan           very differently from you.

   Was it really necessary that I              there watching you rehearse for the play?

Lan asked that we                 her graduation ceremony next week.

 I am not going to sit here and let her insult me. I demand that she immediately                   for what she has just said.

The monk insisted that the tourists                            the temple until they had removed their shoes.

 It's vital that the United States                 on improving its public education system.

Mrs. Smith demanded that the heater               immediately. Her apartment was freezing.

A.  repaired           B. be repaired       C. repair               D. repaired

 I suggest that Frank __the instructions carefully before playing thatgame 

 Lan never goes out at night               ?

 There is nothing to eat,               ?

She thinks they will come,                 ?

  David is talking to his friend,              ?

$\frac{a-b}{\sqrt{a}-\sqrt{b}} -\frac{a\sqrt{a}+b\sqrt{b}}{a-b}$

Làm thế nào để kiểm tra xem cạnh của 1 cái thước có thẳng không?Mô Tả cách làm và giải thích cách làm

Giải giúp mik nhe mn 

  This ticket doesn't cost a lot,                ?

Nobody knows the truth,                ?

A.  do they             B. don't they        C. does it              D. doesn't it

 Nam was playing football,                 ?

A.  was Nam          B. wasn't he         C. was he             D. didn't he

 You'll be at home tonight,               ?

A.  will you            B. won't you        C. are you            D. won't you be