6. If it___ tomorrow, the opening ceremony would have to be postponed.

A. were to rain

B. rains

C. is raining

D.had rained

7. They live in an_____house than any other 1 have ever seen.

A.older

B.elder

C.old

D.eldest

8. The committee____finding it difficult to agree to each other.

A.is

B. are

C.be

D. was

9. The man___to climb out of the window when the firemen arrived.

A. is trying

B. was trying

C.tries

D. has tried

10. Five and seven___. twelve.

A. made

B.is making

C. make

D.has made