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9.   In ten years,John____________ (be) an astronaut.

8.   He__________ at home now,but he_____________ in London next week, (be)

7.   People never know what____________  (happen) in 100 years.

6.   The boy___________ (be) able to ride a bike three month ago.

astronaut ， apartment ， space ， rocket ， fly

1.   They have six holiday____________ for sale.

2.   Do you know the first woman_____________ in our country?

3.   Look! Some birds are_____________ in the sky.

4.   My uncle made some model____________   in his free time.

5.   There is enough___________ in that classroom for sixty desks.

20.   幾個(gè)孩子正在河里游泳。

_________  __________ several children____________ in the river.

19.   老師叫我們反復(fù)讀這篇文章。

The teacher asked us to read the article _______  __________ _______  ______ 

18.   嬰兒學(xué)走的時(shí)候經(jīng)常會(huì)摔倒。

Babies often__________  ___________ when they learn to walk.

 17.   今天上午大量的人去這個(gè)城市中心。

 ___________  _________people went to the city center this morning.

16.   我經(jīng)常問她問題，但她從不感到厭煩。

I often ask her questions,but she___________  ___________  ____________ .