31.
（a） it is typical december weather for this region.
（b） it won't really snow until december.
（c） such a large amount of snow is unusual for this month.
（d） there has never been much snow down south.
32.
（a） he believes mark was the wrong person.
（b） he wants to know who is telling the truth.
（c） he finds the decision unbelievable.
（d） he thought there wouldn't be any awards.
33.
（a） the store doesn't have it now， but will soon.
（b） it is no longer available.
（c） it has been reprinted four times.
（d） the information in the book is not up-to -date.
34.
（a） it's uncomfortable because of the wind.
（b） it isn't as warm as the man had thought it would be.
（c） the man expected it to be windy.
（d） the wind hasn't made it any cooler.
35.
（a） he already knows what ted will say.
（b） he doesn't have time to look at the gift.
（c） he can't imagine what his friends got for him.
（d） he is anxious to see ted's reaction to the gift.
36.
（a） a sales representative.
（b） a store manager.
（c） a committee chairperson.
（d） a class president.
37.
（a） to determine who will graduate this year.
（b） to discuss the seating arrangement.
（c） to choose the chairperson of the ceremonies.
（d） to begin planning the graduation ceremonies.
38.
（a） their names， phone numbers， and job preference.
（b） the names and addresses of their guests.
（c） the names of the committees they worked on last year.
（d） their dormitory name， address， and phone number.
39.
（a） only students who have time for the work.
（b） all the students who are at the meeting.
（c） only students who have a telephone.
（d） all the students who worked on the project last year.
40.
（a） in an hour.
（b） next week.
（c） in one month.