单项选择题
A.will be destroyed B.will have been destroyed C.would be destroyed D.would have been destroyed
If the man（）succeed，he must work as hard as he can.A.wi...
单项选择题If the man（）succeed，he must work as hard as he can.
A.willB.is toC.is going toD.should
If he was fitter, he（）live longer.A.–（不填）B.willC.wouldD...
单项选择题If he was fitter, he（）live longer.
A.–（不填） B.will C.would D.can
If there were life on Mars, such life forms（）unable to ...
单项选择题If there were life on Mars, such life forms（）unable to survive on earth
A.is B.are C.would be D.will be
