You can hardly imagine the great trouble I took ____________ your house.
A. to find      B. finding     C. found     D. having found

___________ what to do, I decided to ask the teacher for advice.
A. knowing not      B. Having not known C. Not knowing  D. Not having known

–Where have you been all day?
  --We _________ some lovely children and we couldn’t get away from them until it was dark.
A. met       B. meet         C. have met      D. have been meeting

I hold the view ___________ she stated was true.
A. that       B. what         C. that what     D. which

 The process of curing a disease is like a war _________ different soldiers fight against an enemy.
A. where      B. when         C. as        D. while

 what if we meet with a situation ___________ none of us are able to deal with?
A. where      B. in which       C. what      D. that

The officials soon realized that, __________, things would get worse.
A. unless dealt with it properly            B. if not properly dealing with it
C. unless properly dealt with               D. if dealt not properly with

The small mountain village     we spent our holiday last month lies in        is now part of Hubei.
A. which; where       B. where; what          C. that; which         D. when; which

AIDS is said ______ the biggest health challenge to both men and women in that area over the past few years. 
A. that it is                 B. to be      C. that it has been     D. to have been

______and I’ll get the work finished.
  A. Having one more hour            B. One more hour　

C. Given one more hour             D. If I have one more hour