A)单项填空 从A、B、C、0四个选项中，选出可以填入空白处的最佳选项，并将答案写在答题卷上。

　　21. Mr. Jiang, as _______ elderly man, took part in the Special Games for_______ elderly, and finished_______ second in the race.

　　A. a; the; the B. an; the;/ C. an, an; the D. the; an;/

　　22. Before the discussion, the host_______ the forms to all the students to fill in.

　　A. tired out B. put out C. handed out D. ran out

　　23. Practice makes perfect._______, you can improve your spoken English.

　　A. On the way B. By the way C. In this way D. In the way

　　24. -Do you mind me_______ in the dining hall? -Sorry. It's not_______.

　　A. smoking; allowed B. smoking; allow C. to smoke; allow D. to smoke; allowed

　　25.---You can't reach_______ something_______ someone's plate. ---OK, I won't.

　　A. for; over B. to; over C. for; through D. to; through

　　26.---How long_______ the film_______?

　　---For about an hour, yes, it finished an hour ago.

　　A. has; been over B has; finished C. did;

　　27.---What a thick fog!1 went the wrong way at the corner and finally got lost.

　　---It's easy to make a wrong turn here even under an ideal weather_______.

　　A. conversation B. conclusion C. condition D. communication