If we ___________some measures, we might have prevented the environmental pollution．
#87466
A
take
B
had taken
C
took
D
have taken
推荐题目
—Perhaps John's not in.—______.Look，the light's on.
#89430
A
Yes，he can be at home
B
No，he couldn't go out
C
Yes，he must be at home
D
No，he needn't go out
____ the expense, I ____ a round-the-world tour.
#89984
A
Were it not … would take
B
If it were not… take
C
Weren't it for… will take
D
If it hadn't been for… would have taken
---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
He ______ the test again, in which case, his mother will be very disappointed.
#89549
A
might fail
B
must have failed
C
should fail
D
could have failed