16. I tried to put _____ a telephone call to him, but his line was always busy.
A. over B. into C. away D. through
17. I hadn’t seen him for years, but I ______________ his voice on the telephone.
A. realized B. recognized C. discovered D. heard
18. Neither Bill nor his parents __________ at home.
A. is B. has C. are D. was
19. If you don’t want to get wet, you had better --------________ this umbrella with you.
A. take B. to take C. taken D. for taking
20. Did you notice the guy ______ head looked like a big potato?
A. who B. which C. whose D. whom
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