If China’s space technology has achieved ____ breakthrough in this field, it really is ____ amazing wonder.
| A．the; an | B．a; an | C．不填; the | D．a; 不填 |
Shirley ______ a book about Tibet last year, but I don’t know whether she has finished it.
| A．has written | B．wrote | C．had written | D．was writing |
______ has been reported in the newspaper, they were about to have peace talks between the two countries when an accident happened.
| A．It | B．As | C．That | D．What |
---Thank you for your CD-ROM. I’ll return it as soon as I can.
---_____. I’ve got another one to spare.
| A．No problem | B．No hurry | C．With pleasure | D．Nothing much |
All of Manhattan, parts of Brooklyn and Queens are blacked out, and people have no idea ___ it’s coming back on.
| A．that | B．when | C．how | D．where |
I first met your sister ten years ago, when she ____at a supermarket as a salesgirl.
| A．has worked | B．had worked | C．was working | D．had been working |