A、since four years
B、for the past four years
C、four years ago
第1题:
A、haven’t
B、hasn’t
C、isn’t
D、aren’t
第2题:
I________ from him since he left.
A、haven’t heard
B、didn’t receive
C、haven’t got
D、didn’t have
第3题:
A. haven’t
B. don’t
C. didn’t
D. hadn’t
第4题:
______ I tell you yesterday not to touch that dog!
A、Haven't
B、Hasn't
C、Didn't
D、Aren't
第5题:
A、didn’t clean
B、hadn’t cleaned
C、don’t clean
D、haven’t cleaned
第6题: