I had been working a couple of months ______ I had a letter from Mike.
A: when
B: until
C: that
D: while
A: when
B: until
C: that
D: while
举一反三
- I had been looking for the book for two days____ I found it at last.( ) A: until B: when C: before D: while
- It _____ we had stayed together for a couple of weeks ____ I found we had a lot in common.( ) A: wasn’t until; when B: wasn’t until; that C: was until; that D: was until; when
- I had not been reading for half an hour _____ I heard steps outside. A: when B: that C: while D: as
- Jack _______on the project day and night for two months now, and I am<br/>beginning to worry about his health. A: has been working B: would be working C: had been working D: was working
- I first met Mary three years ago when we ______ in a middle school together. A: have worked B: had been working C: were working D: had worked