问题

What were you doing this time yesterday?—-I ________ my homework at John’s house.
A:do
B:am doing
C:did
D:was doing
B:am doing
C:did
D:was doing
正确答案是:
同类题型
“I’ve never eaten a hamburger.”— “_________ have I.”
They went on well at first but eventually everything ______ they had worried about happened.
Look! So many passengers________ with their phones on the underground.
will he finish his homework? -In twenty minutes. [ ]
I t doesn’t matter if _______ boys play basketball too much instead of watching TV.