1.The computer doesn't work well,so something---wrong.

.The computer doesn't work well,so something__C_wrong.
a.can have gone
b.should have gone
c.must have gone
d.ought to have gone
2.I'm going to America for a holiday next week._D___.
a.with pleasure
b.with you success
c.for sure
d.that's great
3.The government official explained that there's no point_A__about the cultural gap in that city.
a.to worry
b.with them worrying
c.in worrying
d.worry
4.Many Americans worry about leisure and hurry from one activity to the next,__B__little time to stop and think.
a.leave
b.leaving
c.left
d.to leave
5.He_A_that he could create live fish out of chemicals.
a.claimed
b.demanded
c.argued
d.announced