.He is said________a book on the history of Chinese tone bridge , but I don’t know if he has finished it. A. to have written B. to be writing C . having writing D writing
The play begins at 6: 40 pm. So we have to be at the theatre ________ 6:30 pm at the latest.
I asked him whether he had done all the work himself ________ whether he had had any assistance.
I was on the point of going to bed ________ Mr. Zhang rang.
English is understood all over the world ________ Turkey is spoken by only a few people outside Turkey itself.
In this factory, it's hard to tell cadres ____ workers.