我选的和正确答案不符合,和具体的原因,尤其说明原因,

我选的和正确答案不符合,和具体的原因,尤其说明原因,
1.____ the house on fire,he dialed 119.
A.To see B.Seeing C.Having seen D.Being seen
2.___a post office,I stopped____ some stamps.
A.Passed,buying B.Passing,to buy
C.Having passed,buy D.Pass,to buy
3.We’re ___ to listen to her ____ voice.It’s ___ to hear her sing.
A.pleased; pleasing; pleasure B.pleased; pleasant; a pleasure
C.pleasing; pleased; a pleasure D.pleasing; pleasant; pleasure
4.____the office,the foreign visitors were shown round the teaching building.
A.Having shown B.Showing C.Has shown D.Having been shown
5.The ground is _____with ____ leaves.
A.covering,falling B.covered,falling
C.covered,fallen D.covering,fallen
6.A person _____a foreign language must be able to use the foreign language,______all about his own.
A.to learn,to forget B.learning,to forget
C.to learn,forgetting D.learning,forgetting
7.The students in the university are all taking courses ___a degree.
A.coming to B.going to
C.leading to D.turning to
8.Were you ____when you saw that wild animal
A.fright B.frightening
C.frightened D.frighten
9.He wrote a letter to me _____that his trip to Japan had been put off because of the bad weather.
A.inform B.informing C.informed D.being informed