Tom opened a bookstore in NO.3 Middle School, but        it closed down.

I stopped and said hello to her when I saw her but she _____ me completely and walked on.

I have $20 000 and I need $25 000,but my parents have promised to _______ the difference.

Rather than ____on a crowded bus, he always prefers _____a bike.

If he goes on driving like that, sooner or later, he will ____ an accident.