4. 1s it necessary (tell) his father everything?

3.This room is too small (hold) so many people.

2.He ran fast enough ( catch) the thief.

l.It's impossible for us (finish) the work in an hour.

7. 1s it important to score the most points?

   A. of you   B. for you

   C. to you   D. about you

6.—You must finish this work tomorrow.

   A. finish      B. to finish

   C. finishing   D. to finishing

5. In Great Britain,it isn’t polite from each other’s plate.

   A. eat   B. to eat   C. eating   D. for eating

4. It’s necessary a foreign language.

   A. master   B. mastering   C. to master   D. masters

3. It’s kind Yao Beina to donate her corneas (眼角膜) three people in need.

   A. of;to     B. for;to

   C. of;for   D. for;for

2.—It’s clever you to help me work out the difficult math problem.Thanks!

 —You are welcome. Now it’s easier you to understand it.

   A. of;of     B. of;for

   C. for;of   D. for;for