【单选题】 He waited for the bus for an hour. ______, it arrived.
A．
| [A] At last |
B．
| [B] At once |
C．
| [C] In time |
网考网参考答案：A
网考网解析：
[分析] at last最终，at once立即，in time及时。据题意选A。 查看试题解析出处>>
【单选题】 He waited for the bus for an hour. ______, it arrived.
A．
| [A] At last |
| [B] At once |
| [C] In time |
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