用所给动词的适当形式填空。

1. At the weekend. I usually go ______ (run) for half an hour.

2. My brother often ______ (fly) a kite with me in the park on Sundays.

3. He spends about an hour ______ (watch) TV every day.

4. We ______ (not have) any classes on Sunday.

5. Let him ______ (dress) up as a ghost.

纵队集合时，一般高矮排列顺序是（）。

A.由左向右

B.由右向左

C.由前向后

D.由后向前