There are so many books! It is not easy for us to decide what to take and what to.A. take

问题补充：

There are so many books! It is not easy for us to decide what to take and what to.

A. take on

B. pick up

C. leave behind

D. work out

答案：

A. take on

B. pick up

(答案→)C. leave behind

D. work out

解析：考查动词短语辨义。本句宾语从句中take与leave behind互为反义词。