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21. He said that they
each other for many years..
B. have known
C. knew
D. had known
C. has been trying
A. know
22. I saw that she ............ to hold back her tears. .
A. tries
B. is trying
D. was trying
23. Mary wants to speak with you. - Please tell her that I ................ her as soon as I'm free..
A. will call
B. will have called
B. will have worked
24. Let's meet at eleven o'clock tomorrow. - Sorry, I
A. will be working
25. Say goodbye to Ann now. By the time you return, she
A. will be leaving
26. By 2020, he
A. will work
B. will have left
C. will have been calling
at eleven o'clock..
C. will have been working
for New York
C. will have been leaving
.as the director of this company for thirty years. .
B. will be working
27. Why don't you ask Jim for help? I'm sure that he
A. will help
28. When I
A. reach
29. I
A. go
B. will have helped
school, my class had started.
B. have reached C. reached
to bed after I have done all
B. went
my
work.
C. will have been working
you..
C. will have been helping
D. was reaching
C. have gone
D. shall go