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阅读理解。根据文本内容，判断下列句子正(T)误(F)。
Look at the four people. We may not know them, but we need to say thanks to them.
① Mrs Lee (About 30)
Looks (外貌)：Long curly hair, thin and tall.
She is a singer. She is kind and she often gives away money to help people in need (处于困难中的).
② Mr Wang (About 40)
Looks: Short black hair, thin and short.
He is a doctor. He works very hard to help sick (生病的) people in hospital. Usually he only sleeps five hours (小时) at night.
③ Mr Zhang (About 20)
Looks: Short black hair, fat and tall.
He is a courier (快递员) and he goes to many places (地方) a day. He usually starts (开始) his work at 8 a.m. and goes home at 8 p.m.
④ Mr Cao (About 50)
Looks: Short brown hair, short and a little fat.
He is a street cleaner. He cleans many places every day.
1．Mr Zhang is thin and short and he has short black hair. (       )
2．Mrs Lee and Mr Wang are tall. (       )
3．Mr Zhang is a doctor and he is hard-working. (       )
4．Mr Cao cleans many places every day. (       )
5．These people are very helpful, so we should say thanks to them. (       )