21.

　　（a） she thinks the time has passed quickly.

　　（b） she thinks it's after midnight.

　　（c） she doesn't believe the man.

　　（d） she doesn't care what time it is.

　　22.

　　（a） she's sorry there's no cake left.

　　（b） she'll stay for dessert.

　　（c） the host asked her to leave.

　　（d） she has to go.

　　23.

　　（a） he was wrong about the wedding date.

　　（b） carl's wedding has been postponed till july.

　　（c） he can't remember when carl got married.

　　（d） carl has only been married since june.

　　24.

　　（a） if he earned more money, he'd be able to save more.

　　（b） he didn't save much of his salary.

　　（c） he spent his savings on summer housing.

　　（d） his summer job didn't pay well.

　　25.

　　（a） he'll return the following week.

　　（b） he'll be back immediately after the holiday.

　　（c） he's coming back for the holiday.

　　（d） he'll begin his vacation next week.

　　
　　　　
　　27.

　　（a） catch a later flight.

　　（b） put the telephone near the bed.

　　（c） wake up as early as he can.

　　（d） ask the hotel staff for help.

　　28.

　　（a） he doesn't receive letters from canada.

　　（b） his roommate would like to trade stamps.

　　（c） he can't give the woman the stamps.

　　（d） the woman should ask her sister for extra stamps.

　　29.

　　（a） the meeting was announced today.

　　（b） she'll make the call later.

　　（c） there won't be a meeting tomorrow.

　　（d） she was asked to reserve a room.

　　30.

　　（a） he eats too much when he plays chess.

　　（b） he won't join the chess club.

　　（c） chess is his favorite game.

　　（d） he doesn't enjoy chess as much as he used to.