1(
)内から適切なほうを選びましょう。
1. The old lady ran into the (burning, burned) house to rescue her dog.
2. We cannot swim in (polluting, polluted) rivers.
3. People (riding, ridden) motorbikes must wear helmets.
4. This is a flower (calling, called) “hinagiku" in Japanese.
5. I'm sorry I've kept you (waiting, waited).
6. You must always keep this food (freezing, frozen).
7. I found him (reading, reads) my diary.
8. Betty wanted her hair (cutting, cut) short.