I’m old enough to look after __________ (我自己).
I’m afraid to ride a roller coaster, especially when it moves at high __________ (速度).
Most of the Chinese students study at __________ (混合的) schools.
When we walk _________ (穿过) the road, we should follow the traffic rules.
Some students in western areas are too __________ (贫穷的) to afford pens and notebooks.
Mr Green works as a __________ (老板) in a big company.
It’s polite to ___________ (等待) in line before getting on the bus.
She hopes to be an excellent __________ (舞蹈家) like Yang Liping.
I’m so __________ (not strong) that I can’t walk any further.
—I live on the fourth floor, and you?
—I live two floors above you, that is, on the s________ floor.