2020年成考专升本《英语》模拟题及答案十一
20. We must begin testing this instrument, no matter ____ difficult it is.
A. however B. how
C. whatever D. what
20. ____ him do this job by himself?
A. Why don’t let
B. Why not letting
C. Why not let
D. Why you not to let
21. There can be no doubt ____someone had visited the house before they arrived.
A. why B. whether
C. how D. that
22. He grew more and more absorbed in his work, ___ he almost forgot his meals.
A. that to such an extent
B. to an extent such that
C. to such an extent that
D. such that to an extent
22. It ought to be you ___ me that signs the letter.
A. but B. in spite of
C. rather D. rather than
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