Question

1. Many people think ifs very important  us 

learn English well.

   A. for;to   B. to;to

   C. for;for   D. to;for

Answer 1

1.A

1. 1.A句意:很多人认为学好英语对我们来说很重要。im-portant是描述动作行为本身的词，应该用It is + adj.+for sb. to do sth.结构。