7．The Philippines ________(be)in the Pacific Ocean.

6．One-fourth of the students in our class ________(be)League members.

5．An iron and steel works, with some satellite factories, ________(be)to be built here.

4．How to get rid of these things ________(be )a key problem.

3．One hundred years ________(be)not a long time in human history.

2．A knife and fork ________(cost)ten dollars.

1．There ________(be)one or two things I’d like to know about.

50．Not only I but also Jane and Mary ________ tired of having one examination after another.

　A. is　　　　　　　　　　　 B. are　　　　　　　　　　 C. am　　　　　　　　　　 D. be

49．________ this pair of trousers fit him well?

　A. Are　　　　　　　　　 B. Is　　　　　　　　　　　　　　 C. Do　　　　　　　　　　 D. Does

48．Growing around the lake ________ wild flowers of different colors.

　A. is　　　　　　　　　　　 B. are　　　　　　　　　　 C. has　　　　　　　　　 D. have