27.We are a non-profit company ______ team members are from all over the country.
A. whose
B. that
C. which
D. what
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28.The meeting room is so small that it can hold 20 people ______ .
A. at last
B. at first
C. at most
D. at once
29.She gave us a detailed ______ of the local government 's new health-care proposal.
A. impression
B. explanation
C. education
D. communication
30. Linda _____ her training in a joint company by the end of next month.
A. finishes
B. has finished
C. had finished
D. will have finished
31. It was not until yesterday ______ they decided to re-open the business talk.
A. when
B. which
C. that
D. as