1.I'm afraid David's not here at the moment; he is ( ) work.2.The fire was ( ) control by the time the second fire engine arrived.3.The firm has been firing experienced staff and substituted younger people ( ) them.4.It's difficult to judge a person

1.I'm afraid David's not here at the moment; he is ( ) work.2.The fire was ( ) control by the time the second fire engine arrived.3.The firm has been firing experienced staff and substituted younger people ( ) them.4.It's difficult to judge a person
1.I'm afraid David's not here at the moment; he is ( ) work.
2.The fire was ( ) control by the time the second fire engine arrived.
3.The firm has been firing experienced staff and substituted younger people ( ) them.
4.It's difficult to judge a person ( ) his exterior.
5.He took charge ( ) the government after the military took control in October.
6.The new year came ( ) with a heavy snow storm.
7.The doctor advised my father to cut ( ) smoking as he suffers from a cold now.
8.Despite all human efforts ( ) the contrary,death is one of life's only two certainties.
9.If he was devoted ( ) his wife and children,then he must have a soft heart below that hard exterior.
10.From the viewpoint ( ) the teacher,the new tests just mean more work.

1.I'm afraid David's not here at the moment; he is ( ) work.2.The fire was ( ) control by the time the second fire engine arrived.3.The firm has been firing experienced staff and substituted younger people ( ) them.4.It's difficult to judge a person
1. I'm afraid David's not here at the moment; he is ( at ) work.


2. The fire was ( in ) control by the time the second fire engine arrived.


3. The firm has been firing experienced staff and substituted younger people ( for ) them.


4. It's difficult to judge a person ( by ) his exterior.


5. He took charge ( of ) the government after the military took control in October.


6. The new year came ( around ) with a heavy snow storm.


7. The doctor advised my father to cut ( off ) smoking as he suffers from a cold now.


8. Despite all human efforts ( to ) the contrary, death is one of life's only two certainties.


9. If he was devoted ( to ) his wife and children, then he must have a soft heart below that hard exterior.


10. From the viewpoint ( of ) the teacher, the new tests just mean more work.

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括号内是只准填一个？