1 . It took us about 3 hours to go all ________ way around the Xi’an City Wall. （用适当的词填空）

2 . While running regularly can't make you live forever, the review says it ________ (be) more effective at lengthening life than walking, cycling or swimming. (所给词的适当形式填空)

3 . Unexpectedly，I'm face-to-face with the gorilla，who begins screaming at ________ top of her lungs. That makes her baby scream，and then a 400-pound male appears. （用适当的词填空）

4 . Supposedly you can do it in two hours, but we stopped at the different gates and watchtowers to fake pictures or just to watch the local people going about their ________ (day) routines. (所给词的适当形式填空）

5 . On the edge of the jacket， there is a piece of cloth _______ gives off light in the dark. （用适当的词填空）

6 . Tom explained to his teacher the reason ________he came late. （用适当的词填空）

7 . I quickly lower myself, ducking my head to avoid ________（look） directly into his eyes so he doesn't feel challenge. （所给词的适当形式填空）

8 . I grew up in the small village ________I was born. （用适当的词填空）

9 . In recent years some Inuit people in Nunavut have reported increases in bear sightings around human settlements, leading to a________(believe)that populations are increasing. (所给词的适当形式填空)

10 . It ________ (become) separated from Britain and Ireland by 6500 BC. （所给词的适当形式填空）