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1．Bill Gates _________（devote）himself to the computer business．

2．A lot of _________（soldier）lost their _________（life）in the water．

3．In the Anti-Japanese war, Bethune worked in the _________（north）part of China．

4．The doctor are _________（operate）on the patient．

5．It is _________（produce）in our country．

6．She was _________（bad） hurt when she fell off the tree．

7．I hope you will _________（cover）soon．

8．He has been one of Dr．Clarks' _________（patient）for many years．

9．The teacher walked into the class so _________（quiet）that no one noticed him．

10．Comrade Li Feng has been _________（die）for many years．

11．Is China a _________（發(fā)展中）country?

12．It is _________（據(jù)說）that there will be a football game at 2:00 this afternoon．