suggest,want 和consider后面加什么?下面三题该选什么?为什么?

题目

suggest,want 和consider后面加什么?下面三题该选什么?为什么?
7.They're considering___before the prices go up.
A.of buying the house
B.buying the house
C.with buying the house
D.to buy the house
9.Peter suggested ___ at the next town.
A.to stop B.stopping C.stop D.having stopped
10.Your hair wants ___ .You'd better have it done tomorrow.
A.cut B.to cut C.cutting D.being cut

答案

7、选B.他们正在考虑价格上涨前买下房子.理由如下：正常情况下没有Consider to do,只有在被动时才有consider to do是认为的意思.例:China is considered to be one of the greatest country in the world.中国被认为...