用括号内所给单词的适当形式填空。（5分）

1.The baby is very young. He has no _______ (tooth) now.

2.Yang Liwei is one of the _______ (hero) in my heart.

3.Smoking can bring us many kinds of _______ (ill).

4.He spends two hours _______ (exercise) every day.

5.He did his homework all by _______ (him) yesterday.

When Christie Andrews was born, she weighed less that half of one kilogram. Her heart was the size of a large coin. Her mother said Christie was so small that she could hold her in the palm of one hand.
Christie couldn’t breathe without a machine to give her oxygen. If she had been born 20 years earlier, she would probably have died at once. She needed two operations, but she survived without serious damage.
Twenty years ago , 90% of all premature(早产) babies died. Today, doctors manage to save four out of every five, because they have better machines for breathing and better ways to feed the babies.
But saving Christie’s life cost more than $ 400,000. In some cases, doctors spend 1 million dollars saving a single child. The parents usually don’t have enough money to pay. The government, an insurance company or the hospital picks up the bill. Even after a baby goes home from the hospital, it may require medical care.
Some people think it makes more sense to spend money saving 10 adults who have cancer or other diseases than saving one small baby. But nobody wants to be the doctor who has to tell parents to their faces, “Sorry, I won’t save your new child.”
【小题1】 Parents don’t pay their babies’ hospital bills because        .

用括号内所给动词的适当形式填空。
【小题1】In the past three years, my home town ______________(change) a lot. already.
【小题2】It’s hard to say what ____________ (happen) in 100 years in our country.
【小题3】They_______________(not travel)to Shanghai next week, are they?
【小题4】The students________(chat) from 6 to7 yesterday evening.
【小题5】When I got to the station yesterday morning, my friends _______(wait ) for me at the entrance.
【小题6】If it__________ (not rain) tomorrow, we’ll go hiking.
【小题7】He____________ (not write) a letter to his mother yet. He has to do that soon. His mother misses him very much.
【小题8】Would you please__________(not make) such a big noise. The baby is sleeping.
【小题9】It’s a long time since we ________(meet) last time, isn’t it?
【小题10】----How many times _______the girl __________(forget) to take the keys to her home?
----At least three times.
【小题11】You must spend as much time as you can ________  (practise) playing the piano.
【小题12】They_______(live) in Wuxi since they were born.

Mr. Smith lives in Toronto. He is a doctor. His wife teaches English in a middle school. They have two children, one is a son called Mike and the other is a daughter. She is only three months. Mike loves the baby very much. He often shows her to the guests. He is young and doesn’t go to school. He stays at home to help his mother look after the baby.
One day Mike’s aunt comes to see the baby. She works in another city and sees the baby foe the first time. Mike shows the baby to his aunt.
“Look at the baby, Aunt;” says Mike, “She’s beautiful. I think she looks like me.”
“Does she like playing with you?” asks his aunt.
“I don’t know,” answers the boy, “She can’t speak yet.”
【小题1】Mike is ____________.