-Manuel,couldIuseyourcomputer?-Sorry,I'mgoingto

问题详情：

-Manuel, could I use your computer?

-Sorry, I'm going to ________ it now.

A. work in B. work at C. work on D. work over

【回答】

 C。work on表示"从事；忙于"。

知识点：动词和动词短语

题型：选择题