第二部分：英语知识运用（共两节, 满分40分）
第一节：单项填空（共10小题，每小题1分，满分10分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21．According to the newsman，as a result of heavy fog， expressway has been closed up until further notice．
A．a；the B．the；不填 C．不填；an D．the；the
Help is needed for families _________ homes were destroyed during the earthquake.
| A．which | B．when | C．whose | D．where |
Adam behaved _________ he had never heard such a thing before.
| A．in case | B．as if | C．while | D．though |
Jason has lost his job and is now _________ a very difficult time.
| A．going through | B．going over | C．giving in | D．giving up |
— Thank you so much for the lovely evening, Jim.
— _________.
| A．With pleasure | B．You’re welcome | C．Never mind | D．Forget it |
In order to get ________ enough travel experience, they have planned _________ bicycle journey along the longest river of the country.
| A．an; / | B．an; a | C．/; / | D．/; a |