1. There are... rivers left unpolluted in the world
A.not much
B.quite a few
C.no less
D.few
2. Without(A) his friends' help(B), he wouldn't be able(C) to finish(D) the assignment last week
3. By the time you entered(A) the church, the(B) couple would be(C) married by(D) the priest
4. Not having(A) been to(B) New York before, Susan found(C) the city such(D) attractive.
5. I wanted to know(A) how many(B) people will you(C) invite to the(D) party