------What are you doing?------I'm ____ the math problems.A.work _英语解答

------What are you doing?
------I'm ____ the math problems.
A.work B.working C.working on D.working of

人气：278 ℃　时间：2020-05-07 01:26:27

解答

选c
首先,根据语态要用现在进行时
另外,work on 是固定短语,放在原句中,解释为在解数学题,意思相符.