The nurse _____ on a night shift for several weeks.
A. is working B. works
C. worked D. has been working
A. is working B. works
C. worked D. has been working
举一反三
- 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
- I first met Mary four years ago. She _____ at a shop at that time. A: has worked B: Works C: was working D: has been working
- All these days he ______on his paper. A: has worked B: has been working C: was working D: is working
- 26.Jane was tired. She__________all day. A: was working B: has worked C: worked D: had been working
- For some time now, Eric ______ for foreign trade. A: had been working B: was working C: has been working D: worked