Tom said that he had begun the work______.A.for a month B.a month ago C.a month beforD.a month later为什么选D项?D项和C项有什么区别呢?

分类: 作业答案 • 2021-12-19 11:46:40

问题描述：

Tom said that he had begun the work______.
A.for a month
B.a month ago
C.a month befor
D.a month later
为什么选D项?D项和C项有什么区别呢?

答