一、用括号内所给词的适当形式填空。
1. By the time he got to the station, the train (go).
2. When I (arrive) at the school, the bell had already (ring).
3. When he (wake) up, he realized he (oversleep).
4. The snow (stop) before I got up this morning.
5. He (study) English for three years before he came to this school.
6. We received an (expect) invitation to a concert, which was a nice surprise.
7. The office is four (block) from here.
8. My little sister (stare) at the ice cream in the shop window just now.
9. I was about (leave) for school when my mom reminded me to take my homework.
10. The campfire was (burn) brightly, providing warmth and light for the group of campers.

1. had gone 2. arrived; rung 3. woke; had overslept 4. had stopped 5. had studied 6. unexpected 7. blocks 8. stared 9. to leave 10. burning