31.He must be helping the old man to water the flowers, ______?

　　　 A. is he 　　　　　　 B. isn’t he　　　　　　　　 C. must he　　　　　　　　　　 D. mustn’t he

30.-Can I pay the bill by check?

　　　 -Sorry, Madam, but it is our managing rule that payment ______ be made in cash.

　　　 A. shall　　　　　　　 B. may 　　　　　　　　　　 　　　 C. will 　　　　　　　　　　　 D. can

29.The magazine you lent me ______ among the 10 most popular ones in our school.

　　　 A. named　　　　 B. belonged　　　　　　 　　　 C. listed　　　　　　　　　　　　　 D. ranked

28.Professor Smith, along with his assistants, ______ on the project day and night　 to meet the deadline.

　　　 A. work　　　　　　　　　　 B. working　　　　 　　　 C. is working　　　　　 D. are working

27.Class regulations require ______ is the last to leave the classroom ______ off all the lights.

　　　 A. who; should turn　　　　　　　　　　　　　　　　 B. whomever; turn

C. whoever; turning　　　　　　　　　　　　　　　　 D. whoever; turn

26.He was not really in the mood for anything ______ it dawned on him that it had not been his fault.

　　　 A. since　　　　　　　　　　 B. when　　　　　　　　　　 　　　 C. after　　　　　　　　　　　　　 D. until

25.No progress was made in the trade talk as neither side would accept the conditions of ______.

　　　 A. others　　　　　 B. the other　　　　　　 　　　 C. either　　　　　　　　　　　　　 D. another

24.______, in some areas the electricity was cut off, ______ residents in 8 counties spend their lunar New Year’s Eve in darkness.

　　　 A. Making matters worse, making　　　　　　 B. What was worse, to make

C. Worse still, making　　　　　　　　　　　 D. To make matters worse, to make

23.She was afraid that unless the train speeded up she would miss her ______ to Scotland.

　　　 A. ticket　　　　　　　　　 B. place 　　　　　　　　　 C. seat　　　　　　　　　　　　　　 D. connection

22.Just as some experts say, shopping by television will never take the place of shopping in ______ stores, because many people find shopping at a store ______ great enjoyment.

　　　 A. a; the 　　　　 B. the; a 　　　　　　　　 C. a; /　　　　　　　　　　　 D. /; a