21.
（a） she wants to know where the restaurant is？
（b） she's recommending a good place to go for dinner.
（c） she thinks the man should go to france.
（d） she's inviting the man to eat with her.
22.
（a） run in town.
（b） look more carefully.
（c） buy shoes from a catalog.
（d） find an easier place to exercise.
23.
（a） saying good-bye to a friend.
（b） buying a ticket for a sports event.
（c） paying a bill at the bank.
（d） arranging a plane trip.
24.
（a） he didn't know how to begin to write a play.
（b） he hasn't liked plays very much in the past.
（c） he didn't want to talk about it right away.
（d） he wasn't sure what the first part was about.
25.
（a） dan received them.
（b） gloria forgot about them.
（c） dan mailed them.
（d） gloria has sent for them.
26.
（a） his room is quite small.
（b） he had to walk around the dormitory.
（c） it's hard to find a room in the dormitory .
（d） it's his turn to inspect the dormitory room.
27.
（a） he should look in a different place.
（b） she can help him if necessary.
（c） he should stand on something.
（d） perhaps he shouldn't have tea.
28.
（a） they are going toward the lake.
（b） they have made a new trail.
（c） they have decided to sit outdoors.
（d） they are camping around the lake.
29.
（a） anyone can do it .
（b） no one can do it.
（c） alex can probably do it.
（d） alex probably shouldn't do it.
30.
（a） he'll go if the woman goes too.
（b） he doubts he'll be able to go.
（c） he's too tired to go.
（d） he's eager to go.