Lots of rescue workers were working around the clock，__________ supplies to Yushu, Qinghai Province after the earthquake.
| A．sending |
| B．to send |
| C．having sent |
| D．to have sent |
. I could hardly tell the twins apart because their appearances are only ____ different.
| A．slightly | B．gradually | C．personally | D．extremely |
He is the lawyer who you took photos ____ you were in the Forbidden City.
| A．when | B．of when | C．where | D．of where |
This picture was taken when my father was a child and even I myself couldn’t _____.
| A．find him out | B．pick him out | C．put him out | D．take him out |
While ____ in tea with that dealer, Mr. Smith had himself ____.
| A．trading; ripped off | B．buying; ripping off |
| C．selling; ripped off | D．purchasing; rip off |
Mary _____ be in London because I saw her in town just now.
| A．mustn’t | B．isn’t able to | C．needn’t | D．can’t |