几道英语选择如下

几道英语选择如下
1.All the trees in the forest were cut down for money, __ big floods to happen every year.
A.causingB.to cause C.causedD.cause
2.there __ no tickets left ,the visitors had to return home from the museum .
A.wereB.hadC.being D.had been
3.With many patients __ ,the doctor had no time to have a cup of coffee.
A.wait B.waiting C.waitedD.to wait
4.the customers paid for the hamburger ,__ the food ,and left the McDonalds in a hurry.
A.getB.gettingC.got D.to get
5.___ frightened the thief into running away without taking the money?
A.I supposed what B.Do you suppose whatC.what do you suppose D.What do you suppose that
6.___ his article with his brother's ,Tom realized his mistakes and weak points.
A.to compare B.comparingC.compared D.
Being compared
7.the new stadium is said to be ___ than the old one.
A.a quarter bigger B.a quarter as biggerC.a quarter too bigD.a quarter so big
求答案解析不用太详细谢谢各位~