1）There are three traffic （lights）：red,yellow and green.Red means “（stop）”.Green means "go" and yellow means "wait".
2)He cleans streets.He is a (cleaner).
3)—(Where) is the museum,please?—It's next to the post office.
4)Bill is a doctor.He works in a (hospital).
5)—What's your hobby?—I like (riding) a bike.
嘛,就这样了,这可是我一个字母一个字母打出来的TAT