26. The student's _____ French well helped him a lot in learning English.

A. know
B. to know
C. knew
D. knowing

27. There are many children and adolescents ______ behavior is generally unacceptable.

A. who
B. whom
C. whose
D. that

28. ____ the Atlantic Ocean crosses the equator, the trade winds cause a flow of water to the west.

And
B. Where
C. At
D. That

29. I'd rather you _____ anything about it for the time being.

A. didn't do
B. not do
C. not to do
D. don't have to

30. It is not always possible to foresee the obstacles _____ your way towards an ambitious goal.

A. blocked
B. blocking
C. to block
D. to blocking

Section BDirections: There are 10 incomplete statements here. You should fill in each blank with the proper form of the word given in the brackets.31. It is (sure) _____ self-evident that radical changes must be made before any real progress can be achieved.

32. Had the driver of the train not reacted so quickly, the accident (be) _____ much worse.

33. It's worthwhile (take) _____ the trouble to explain a job fully to new employees.

34. Climbers have to carry all their equipment on their backs, (not mention) _____ their tents and bedding.

35. The (restrict) _____ on traveling to that country and trading with that country have been loosened.