摘要： his return to school, he went directly to his office and began to work. A. In B. At C. On D. For

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______ his return to school, he went directly to his office and began to work.

[ ]

A. In
B. At
C. On
D. For

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________ his return to school, he went directly to his office and began to work．

A.
In
B.
At
C.
On
D.
For

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________ his return to school, he went directly to his office and began to work．

In

At

On

For

查看习题详情和答案>>