---Who won the election for mayor? ---A man _____ to represent every minority group in the city.
A. claiming B. claims
C. is claimed D. having claimed
----Do you have any idea why Jenny left the firm?
---Probably , she _____ for a pay rise, but was turned down.
A. has held out B. holds out
C. held out D. has been holding out
--What a pity! George ____well quit the trip to Hangzhou. --Let me phone him for the final decision.[
A. can B. must
C. shall D. may
It may be necessary to stop______in the learning process and go back to the difficult points in the lessons.
A. at intervals B. at random
C. at ease D. at length
The natural environment should be protected because of the important role _______ plays in human survival and development.
A. which B. the one
C. it D. that
---Was the proposal passed at yesterday’s meeting?
---Yes, but some members of the committee expressed__________.
A. association B. reservation
C. authority D. corporation
