31.

　　(a) get a ride home with nancy.

　　(b) find a place to live.

　　(c) go to the store before it closes.

　　(d) carry his groceries home.

　　32.

　　(a) he didn't expect to buy a lot.

　　(b) he had only one bag of groceries.

　　(c) the supermarket is just down the block.

　　(d) he thought he'd get a ride with the kramers.

　　33.

　　(a) they are paying for his education.

　　(b) they invited him to their party.

　　(c) they took him on a vacation with them.

　　(d) they let him live with them for free.

　　34.

　　(a) she was impressed by it.

　　(b) it was a waste of money.

　　(c) she was amazed it had opened so soon.

　　(d) she didn't like it as much as the other wings.

　　35.

　　(a) he took a tour of the city.

　　(b) he read about it.

　　(c) he wrote an article about it.

　　(d) he worked there as a guide.

　　36.

　　(a) they came from the original wing.

　　(b) they're made of the same material.

　　(c) they're similar in shape.

　　(d) they were designed by the same person.

　　37.

　　(a) it was made of aluminum.

　　(b) it wasn't large enough.

　　(c) it wouldn't move in the wind.

　　(d) it was too heavy to put up.

　　38.

　　(a) to review material that will be on a test.

　　(b) to introduce a new professor.

　　(c) to explain changes in the schedule.

　　(d) to describe the contents of a paper.

　　39.

　　(a) at the beginning.

　　(b) in the middle.

　　(c) one week before the end.

　　(d) at the end.

　　40.

　　(a) administer an examination.

　　(b) present a conference paper.

　　(c) explain next week's schedule.

　　(d) take attendance in class.