If the American government      the expert’s suggestion, the world economy would not be in such a mess now.
#86910
A
followed
B
follows
C
should follow
D
had followed
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---I was trying to carry out the plan, but I failed.---Well, you _________, for we were uncertain it would do ________.
#87807
A
needn’t do that, in fact
B
needn’t have done, in effect
C
needn’t have, in practice
D
needn’t, in time
The thief ________ in from the kitchen window as the door was closed.
#90092
A
may climb
B
must have climbed
C
could have climbed
D
should have climbed
 They ______ so tired if they ______ for a whole day.        
#87216
A
wouldn’t feel, didn’t walk
B
wouldn’t feel, weren’t walking
C
wouldn’t be feeling, weren’t walking
D
wouldn’t be feeling, hadn’t been walking