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 — A computer is very popular and helpful .

   — I think so. It _______ in many different fields.

    A. used            B. will use           C. is used          D. was used        

My uncle is an experienced teacher. He_____English since 2002.

    A. teaches             B. taught             C. has taught          D. will teach      

Mr. Green _______ his lessons when I went into his office.

   A. prepares              B. prepared            C. is preparing        D. was preparing

—Tom, What did you do last Sunday morning ?

       — I _______ my grandma with my parents .

    A. visited               B. visit                  C. will visit            D. have visited

Our teacher usually gets to school a little _______ than our students.

    A. early                 B. earlier                C. earliest              D. the earliest

We are often told_______ water in our daily life.

       A. save               B. saving             C. to save            D. saves

       There is ________wrong with my bike. I have to walk .

       A. something       B. anything          C. everything       D. nothing

— Excuse me , ______ you take a photo for us?

    — Sorry, I can’t.

A. can                  B. need                 C. must              D. should

— Your dress is really beautiful. _______ is it ?

    —It’s $120.

     A. How old       B. How many     C. How much   D. How long

—Would you like to go to the park with me?

   —I’d love to, ________ I’m afraid I have no time.

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