Shall we go to the movies?（同义句转换） ______...

The problem is so difficult that I can’t do it.（同义句转换）

The problem is________difficult for me________do.

I found it difficult to get to sleep at night.(改写同义句)

I found _______ ________ difficult to get to sleep at night.

-- 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