He did ___until it was midnightA.a problem after a problem B.problem after prolemsC.a problem after problem D.problem after problem

问题描述:

He did ___until it was midnight
A.a problem after a problem B.problem after prolems
C.a problem after problem D.problem after problem

D

答案是A

我觉得应该是A
觉得题目应该是想说一道接着一道的做下去,直到半夜.