(2013·陕西师大附中模拟)If we had taken such effective measures much earlier, the river ________ so seriously now.
#86520
A
is not polluted
B
would not be polluted
C
had not been polluted
D
would not have been polluted
推荐题目
Sarah, it is high time that you_______; or you won’t have time to______ before the party.
#90030
A
got up; get changed
B
get up; get changed
C
will get up; get changing
D
should get up; get to change
 We      the postcards yesterday, but it didn’t arrive.
#87363
A
should receive
B
ought to receive
C
ought to have received
D
must have received
 — Where is John?   — He _____ in the library.
#90206
A
should be
B
must be
C
can be
D
must have been