_________ difficult the task may be, we must finish it on time, because we can’t meet such a precious opportunity _______ we have expected．
| A．Whatever; that | B．However; as |
| C．However; that | D．Whatever, which |
Miss Li ________ as a biology teacher for fifteen years in our school, and now she is Party secretary of our city.
| A．has worked | B．worked | C．had worked | D．works |
—I thought Stephanie and Lee were getting married in June.
—No, that’s ________ her cousin’s wedding is.
| A．how | B．when | C．why | D．where |
Since its entry into ________ Chinese market, Google has been enjoying ________ legal market access and national treatment.
| A．the; 不填 | B．不填; 不填 | C．a; the | D．the; a |
.China’s housing price becomes one of the hottest topics during the Two Sessions, ________ most ordinary Chinese people find it more and more difficult to buy a flat in cities.
| A．though | B．so | C．as | D．where |
.It is uncertain whether the medicine will work on the this cold, _________？
A. is it B. isn't it C, will it D. won't it