21. I talked to Bob two weeks ago. I thought he wanted to know about my cat, but I misunderstood him. He asked me where _____, not my cat.
A. is my hat B. my hat was C. my hat is D. was my hat
22. “The people in the apartment upstairs must have a lot of children.” – “I don’t know how many _____, but it sounds like they have a dozen.”
A. children do they have B. do they have children
C. children they have D. they have children
23. Do you know _____? I myself have no idea.
A. how many years the earth is B. how old the earth is
C. how long is the earth D. how much time has been the earth
24. “There’s too much noise in this room. I can’t understand what _____.”
A. is the professor saying B. is saying the professor
C. that the professor is saying D. the professor is saying
25. When I was little, my father gave me some advice. He said _____ talk to stranger.
A. I shouldn’t B. that shouldn’t C. don’t D. that I don’t
26. Scientists are now beginning to conduct experiments on _____ trigger different sorts of health risks.
A. noise pollution can B. that noise pollution
C. how noise pollution D. how noise pollution can
27. I don’t know _____.
A. when was this house built B. when this house was built
C. whom does this house belong to D. who does this house belong to
28. “Did you tell Carol where _____ us this evening?” – Yes, I did. I can’t understand why she is late.”
A. should she meet B. she to meet C. she meets D. to meet
29. A fortune-teller predicted _____ inherit a lot of money before the end of the year.
A. that I would B. that I C. what I will D. what I
30. “Bill Frazer seems like a good person for the job, but we don’t know why he left his last job.” – “I know why. He told me _____ a serious policy disagreement with his boss last January.”
A. if he’d had B. he’d had C. what he’d had D. that what he had
