二、单项填空（共18小题; 每小题0.5分，满分9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，并标在试卷的相应位置。
21. —Didn’t you find the film exciting?
—________, I nearly fell asleep half way through it!
A. What’s more B. Generally speaking C. On the contrary D In particular
22. The school shop, ________customers are mainly students, is closed for the holidays.
A. which B. whose C. when D. where
23. Today we have chat rooms, text messaging, emailing etc, but we seem ________ the art of communicating face-to-face.
A. losing B. to be losing C. to be lost D. having lost
24. Seasonal influenza (流感) is ________ by a sudden fever, cough, headache, sore throat and runny nose.
