题目内容
— Has Sam finished his homework today?
— I have no idea. He ________ it this morning.
A.did |
B.was doing |
C.has done |
D.had done |
【答案】
B
【解析】略
练习册系列答案
相关题目
题目内容
— Has Sam finished his homework today?
— I have no idea. He ________ it this morning.
A.did |
B.was doing |
C.has done |
D.had done |
B
【解析】略