Jeff_______(study)for a math test yesterday.
I’m too busy to chat with you on QQ now. (改为复合句)
I’m _______ busy _______ I can’t chat with you on QQ now.
Shall we go to the movies?（同义句转换）
______going to the movies?
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
