-- How does your sister learn Russian, Mike?

--She learns it  _______ listening to the tapes.

A. of                  B. by

C. in                  D. for

It’s important ____ the piano well.

A. of him to play                   B. for him to play

C. of him playing                   D. for him playing

She sang a song. Her voice________ sweet.

A.heard            B.sounded

C.listened          D.tasted

- ______plastic bags we use, _____ it will be to the environment.

- I agree ________ you.

A. The less; the better; with      B. The fewer; the better; with

C. The less; the worse; to        D. The fewer; the worse; to

--- Do you know much about the city?

--- Yes, I ___________ there three times.

A. was                  B. have gone

C. went                D. have been

What a nice day! We should go sightseeing ________ watching TV in the hotel.

A. because of             B. instead of

C. together with         D. out of

---- How do you usually go to school, Mary?

----I usually go to school _______ a bus.

A. take                   B. by

C. on                    D. with

It’s careless _____ him to make the same mistake again. I think it important ______ everyone to be careful in everything.

A. to; for            B. for; of

C. of; to             D. of; for

—Don't worry．Mum will come to solve the problem．

—_______ she won' t come?

A．Why not          B．What if

C．What about       D．How about

—How do you study _________ a test?

—I often study _______ a group．

A．to; for           B．for; at

C．at; in           D．for; with