By the time you arrive， I ________ working for two hours．
A: will be
B: can
C: will have been
D: have been
A: will be
B: can
C: will have been
D: have been
C
举一反三
- --- "You seem to be a secretary." - " ____________ . I have been working as a secretary for two years."
- By the end of July, I _____ in the lab for two years. A: would have been working B: have worked C: will have worked D: will have been working
- They have been _ outsider for two hours.
- We（）on it for many hours but we have not yet reached any concinsion. A: work B: have been worked C: have been working D: are working
- By the time your plane lands tonight, I _____ at the airport for 3 hours. A: had waited B: have been waited C: had been waiting D: will have been waiting
内容
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By the end of next month I ______ here for 20 years exactly. A: have been working B: shall have been working C: would have been working D: has been working
- 1
We ______ on it for many hours, but we have not yet reached any conclusion. A: are being worked B: are working C: have been working D: have been worked
- 2
I am tired. I ______ all day. A: am working B: have been working C: worked D: have been worked
- 3
— How many times have you been to America — It’s the second time I ______ there. A: was B: am C: have been
- 4
He ____ Tokyo, for I saw him a short time ago. A: must have gone to B: mustn't have been to C: can't have gone to D: can't have been to