We __________ Dorothy since last Saturday.
A. don’t see
B. haven’t seen
C. don’t have seen
D. didn’t see
Chọn đáp án B
A: Who’s that pretty girl Tom dancing with?
B: I don’t know. I __________ her before.
A: Do you know our town at all?
B: No. It is the first time I __________ here.
A: I’m sorry to keep you waiting.
B: Oh, not at all. I __________ here only a few minutes.