8.He woke early _____ it was raining.

8.He woke early _____ it was raining.
A.finding B.to find C.found D.to have found
9.I regretted _____ the days when I _____ hard at school.
A.wasting,must have worked B.having wasted ,should have worked C.to waste ,should work D.to have worked ,would work
10.Some students prefer a strict teacher who tells them exactly _____,others prefer ____ to work on their own,
A.what to do ,to be left B.what to do ,to leave C.how to do ,to be left D.how to do ,to leave
11.It was rather careless of you ____ your bag in the bus .
A.to have left B.to have C.leave D.left
12.I regret ______ you the news _____ you failed this time.
A.to tell ,that B.telling ,that C.to tell ,which D.having told ,which
13.When the fire broke out ,the Smiths happened____at the cinema.
A.be B.were C.to have been D.to be
一定要解释下为什么选啊,