________ important tool the computer is!

A. How              B. How an    C. What      D. What an

I won’t go to Zhang Wei’s birthday party ________ I am invited.

A. unless            B. because     C. if    D. when

—— Would you like to see the film with me？

—— I’m sorry I ________ it twice.

A. see              B. will see

C. have seen       D. am seeing

Students like the teachers ________ make their classes lively.

A. where            B. which    C. what       D. who

I will tell him the news when he ________ back.

A. comes      B. came       C. will come   D. come

Susan with her parents ________ the yard when I saw her.

A. is cleaning     B. are cleaning

C. was cleaning    D. were cleaning

—— Mum, can I go out to play basketball?

—— No. You mustn’t go out until your homework ________.

A. will finish        B. is finished

C. finishes           D. was finished

You look tired. You’d better ________ a good sleep.

A. have             B. having        C. had         D. to have

—— How long did it ________ you to arrive there?

—— Two hours.

A. pay        B. spend    C. cost     D. take

She’s improved her English a lot, ________?

A. isn’t she    B. hasn’t she     C. has she        D. is she