30. Jack 　　　　　yet, otherwise he would have telephoned me.

A. mustn’t have arrived　　　 B. shouldn’t have arrived

C. can’t have arrived　　　　 D. need not have arrived　　　

29. A modern city has appeared in 　　　　　was a waste land ten years ago .

A. which　　　 B. what　　 C. that　　　 D. where　

28. ----- Look! It ________again.

----- Yes. This is the third rain we _____this month.

A. will rain, shall have　　　 B. is raining, have had

C. rains, had　　　　　　　 D. is going to rain, have had　　

27. ----- Mr. Johnson, would you have some more ice-cream?

----- No, thanks. It’s very good, but I have to _____ my weight, you know.

A．remain　 B．watch　 C．notice　 D．care　　　

26．We are always warned not to act 　　　　what will happen afterwards .

A．in the event of　 B．as a result of　 C．regardless of　 D．in spite of

25. -- Lucy, could you please spare me a few minutes?

--_______, but I hope “a few minutes ” won’t turn into a few hours.

A. It doesn’t matter　　　　　　 B. That’s kind of you

C. I’m afraid not　　　　　　　 D. I guess so　　　

24．Evidence has been piled up 　　　　drinking water after getting up in the morning contributes to one’s health.　

A．what 　　　　　 B．which　 C．if 　　　　　　 D．that　　　

23．This new machine is technically far 　　　　to the previous type.

A．superior 　　　　　　 B．junior 　　　 C．senior 　　　　　　　 D．equal　 　　　

22.---- I’d like to take a chance and run a business.

---- Do you know about the local market? ____________.

A．No problem　　　　　　　　　　　　　　 B．Better play it safe

C．Do as you please　　　　　　　　　　 D．Think nothing of it　　

21．___ killing of so many protected animals made ____ stir in the local people.

A．The; a　　　　　　 B．不填；不填　　　　　 C．The；不填　　　　　 D．不填；a