A.figure out
B.catch on
C.set out
D.work on
第1题:
A、oughtn't to leave
B、needn't have left
C、needn’t leave
D、couldn’t leave
第2题:
A:What’s the extent of the delay? B: ( )
A.BeiJing
B.apron
C.About 2 hours
D.bullet
第3题:
第4题:
A.is
B. was
C.be
D. been
第5题:
第6题: