29. Is this research center _____ the foreign guests visited last week?

A. that B. which C. where D. the one

28. They started early that morning in order that they_____ there before noon.

A. would get B. got

C. must get D. might get

27. Our kind teacher wanted to teach us _____ he knew athis lesson.

A. that B. all what C. that all D. everything which

26. Mary cares about clothes too much, and she _____ too much money _____ clothes.

A. spend; in B.cost; at C. pays; to D. spends; on

25. --How did you do in the test?

--Not so well. I _____ much better but I misread the directions for Part D.

A. could do B. could have done

C. must have done D. should do

24. "_____ of them are not here." means "_____ of them are not here."

A. All; Some B. Both; Every C. Both; Neither D. All; Both

23. We must do something to _____ factories _____waste water into the river before it is cleaned.

A. stop; pouring . B. prevent; to pour

C. keep; pouring D. stop; to pour

22. What way are you thinking of _____ rid of the flies?

A. to get B. getting

C. being got D. to be getting

21. Jack is a good friend _____, he often comes to our home for a visit.

A. of my father B. of my father's

C. for my father D. with my father

20. You can say "He went there _____, not _____."

A. on the car; by car B.on foot; in his car

C. by foot; by car D.in his car; by his foot