Put the verbs in the Past Perfect Simple or Past Perfect Continuous

Bob had a bandage on his leg. He (fall) [ ] off the ladder at the weekend.

1. When we were in China last year, his Chinese was very good. I think he [ ] it for four years.
2. We didn't speak because we [ ] really badly.
3. I was really exhausted yesterday because we [ ] basketball with Kevin and Mike for three hours.
4. My mum went to the supermarket, because our cat [ ] all the meat from the fridge.
5. We could make a huge snowman with kids because it [ ] for two days.
6. I came to work late because we [ ] into a car accident.
7. I didn't recognize Jane! She [ ] a lot since I last saw her.
8. Susan got fever. She [ ] with friends under the rain long.