31. ______ the Atlantic Ocean crosses the equator, the trade wind causes a flow of water to the west.
A) How
B) When
C) That
D) Where

32. When we rushed out of our classroom at hearing such a loud noise, we could see a helicopter_______ above the classroom.
A) to hover
B) hover
C) hovered
D) hovering

33. The future for the country will be indeed gloomy_______ the government can change its present policy
A) even if
B) now that
C) unless
D) provided

34. This vast stretch of land, where our forefathers lived and worked and fought from time immemorial, belongs to China, _____ was recorded in history.
A) it
B) as
C) that
D) what

35. Little ________ even one year age that I would be studying economics here today at Oxford University.
A) I knew
B) I did know
C) did I know
D) should be know

31.D 32.D 33.C 34.B 35.C