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
A: work
B: have been worked
C: have been working
D: are working
C
举一反三
- 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
- 4. We ________ on it for several hours but we have not yet reached any conclusion. A: A. work B: B. are working C: C. have been working D: D. have been worked
- How many men does your uncle _____ for him A: have worked B: have to work C: have working D: have been working
- By the end of next month I ______ here for five years. A: will work B: have been working C: have worked D: will have been working
- We ________ on it for several hours but we have not yet reached any conclusion.
内容
- 0
I____(work) as an assistant manager for four years. A: work B: have worked C: am working D: have been working
- 1
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
- 2
I am tired. I ______ all day. A: am working B: have been working C: worked D: have been worked
- 3
Since I came to this school,I _____as a volunteer. A: have been working B: have be working C: have worked D: have being working
- 4
Mr. Green began to work in ABC Company in 1990. He ______ for ten years by next summer. A: will work B: will have worked C: has been working D: will have been worked