Many a plan ______ to fight against pollution.
A: have been worked out
B: have been worked on
C: has been worked out
D: has been worked on
A: have been worked out
B: have been worked on
C: has been worked out
D: has been worked on
C
举一反三
- For past 20 years, she _________ for the company. A: has worked B: have worked C: has been worked
- () here for 3 years, she has been quite experienced in dealing with those affairs. A: Having worked B: Having been worked C: Have worked D: Worked
- ________ in the company for three years, Kevin has become experienced in foreign trade. A: Having worked B: Have been working C: Have worked D: Worked
- 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
- 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
内容
- 0
_____ in the company for three years, Mark has become experienced in business negotiations. A: Having worked B: Having been working C: Have worked D: Worked
- 1
My mother _________ in this factory for 2 years. A: worked B: works C: has been worked D: has worked
- 2
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
- 3
I am tired. I ______ all day. A: am working B: have been working C: worked D: have been worked
- 4
This is the second year that I ______ in this college. A: worked B: have worked C: have been working