52单词网 > 高中英语 > 高中英语题库 > repeatedly, the problem still appeared in the beginner's homework. [ ] A. Explai

repeatedly, the problem still appeared in the beginner's homework. [ ] A. Explai

来源:网络 时间:
repeatedly, the problem still appeared in the beginner's homework. [ ] A. Explai

________ repeatedly, the problem still appeared in the beginner's homework.

[]A.

Explaining

B.

Having explained

C.

Having been explained

D.

To be explained

试题答案

答案:C