---Why didn’t you reared him of the possible danger?---But what       otherwise? He never listens to me.
#86877
A
could I do
B
could I have done
C
should I do
D
must I have done
推荐题目
---Have you found your book yet? ---No. I’m not sure where I ___it.
#88088
A
leave
B
had left
C
could have left
D
was to leave
We were strongly recommended that we _____ in Malaysia. 
#86432
A
didn’t travel
B
wouldn’t travel
C
hadn’t travelled
D
not travel
 The door______. Better have it repaired .
#89515
A
isn’t shut
B
hasn’t been shut
C
won’t be shut
D
won’t shut