28、Nobody but doctors and those ________ by Dr Zhang ________to enter the patient’s room.

A．invited; is allowed                                       B．a(chǎn)re invited; are allowed

C．being invited; is allowed                               D．being invited; are allowed

27、________ from him so far, she felt a little worried.

A．Having not heard                                        B．Not having heard

C．Not hearing                                                D．Not to hear

26、Why! I have nothing to confess. ________ you want me to say?

A．What is it that                                             B．What it is that

C．How is it that                                             D．How it is that

24、Tom, Jack and Rose were named as assistant professors. Believe it or not, ______ three of them were of ______ age.

A. 不填; an       B. 不填; the             C. the; an                      D. the; the

23、With the number of cars increasing rapidly in cities, a major problem is _____ the cars can be parked.

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

22、My father gave up smoking for a while, but soon ______ to his old days.

A. returned        B. returns         C. was returning    D. had returned

21、The wildlife project will cost quite a lot, ______ it will benefit us in the long run.

A. or            B. since          C. for                D. but

20、All the preparations for the task _________, and we're ready to start.

A. completed      B. complete     C. having been completed      D. have been completed

19、.—Don't let others know it.

—Yes, I see. I will keep the secret ______ you and me.

A. with          B. around             C. among              D. between