II. Choose the best answer (选择最恰当的答案): (共20分)
31. Could I have an early morning call ________six o'clock tomorrow?
A) on B) to C) at D) in
32. We have decided to try ________ best to raise more money for the local charity.
A) us B) our C) we D) ours
33. You really don't have to worry ________ your weight. You look just right.
A) for B) from C) with D) about
34. I can't connect my computer to the Intemet. There must be ______ wrong with it.
A) something B) everything C) anything D) nothing
35. The baby feels _________ while his mother holds him in her arms.
A) save B) safe C) safely D) safety
36. Pudong International Airport is one of airports in the world.
A) big B) bigger C) biggest D) the biggest
37. Martin and his friends didn't eat up all the food they ordered, __ they took the rest away.
A) for B) or C) so D) as