16. I _____ with thanks the help of my colleagues in the preparation of this new column.
A. express
B. confess
C. verify
D. acknowledge
17. I always _____ what I have said.
A. get to
B. see to
C. lead to
D. hold to
18. I am not used _____ to like that.
A. to being spoken
B. to speak
C. being spoken
D. to speaking
19. I am sorry that I must _____ your invitation owing to a previous appointment.
A. decline
B. reject
C. accept
D. receive
20. I appreciate _____ to your home.
A. to be invited
B. to have invited
C. being invited
D. having invited
参考答案：
1C 2. B 3. D 4. C 5. D 6. C 7. A 8. B 9. C 10 . C
11. A 12. A 13. A 14. A 15. A 16. D 17. D 18. A 19. A 20. C
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