_______ such heavy pollution already, it may now be too late to clean up the river.

A. Having suffered   B. Suffering  C. To suffer                           D. Suffered

I paid him ￡50 for the painting, but its true ______ must be at least ￡500.

A. price    B. money   C. value       D. importance

During the days ________, he worked as a servant at the Browns.

A. followed B. following C. to follow D. that followed

Last summer we visited the West Lake, ______Hangzhou is famous in the world. 

A. for which B. for that C. in which D. what

That is the day ______I'll never forget.

A. which B. on which C. in which D. when

---Will you lend me some money?

      ---Sorry, mine_____.

       A. has run out    B. were used up   C. has been run out  D. gave out

The student didn’t pay any attention to the lecture; he ________ of something else.

A. thought        B. had thought  C. would think    D. was thinking

I wonder why Jenny ________ us recently. We should have heard from her by now.

A. hasn’t written     B. doesn’t write  C. won’t write       D. hadn’t written

The discussion ________ alive when an interesting topic was brought in.

A. was coming     B. had come C. has come       D. came

The boy is tall ___ his age.

       A. in       B.with       C.by        D.for