Ⅰ. 用所给词的适当形式填空(3分钟，10分）
1. Don’t _____ (cross) the railway, the train is coming.
2. Here _____ (be) birthday cards for you.
3. We need a place _____ ( buy) apples.
4. I’ll return the book to you when you _____ (come) to my home.
5. Half past an hour _____ (late), we got to the foot of the mountain.
