The leaves of this tree turn red ____ , so we visit it at the end of every October.

A. in the autumn B. in autumn　 C. in early autumn D. in late autumn

The professor referred to         yesterday.
   A. come          B. came           C. coming          D. comes

There are usually a lot of _________ (顾客) in the KFC.

Millions of pounds' worth of damage _____ by a storm which swept across the north of England last nigh
A. has been caused   B. had been caused 
C. will be caused   D. will have been caused

It was not until dark 　　　 he found 　　　 he thought was the correct way to solve the problem.?

A. that；what　　 B. that；that　　 C. when；what　　 D. when；that?

The engineer ______my father works is about 50 years old.

A. to whom 　　 B. on whom 　　 C. with which 　　 D. with whom

Did you _______ the lecture yesterday afternoon?

A. join　 　B. take part in　　 C. attend　　 D. go in for

Mr. Wang was such a good teacher _______ the students love and respect.

A. who 　 B. whom　 C. that 　 D. as