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While building a tunnel through the mountain, ___________.
A．an underground lake was discovered
B．there was an underground lake discovered
C．a lake was discovered underground
D．the workers discovered an underground lake
查看习题详情和答案>>While building a tunnel through the mountain, ________
A．an underground lake was discovered
B．there was an underground lake discovered
C．a lake was discovered underground
D．the workers discovered an underground lake
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A．an underground lake was discovered
B．there was an underground lake discovered
C．a lake was discovered underground
D．the workers discovered an underground lake
查看习题详情和答案>>
While building a tunnel through the mountain, ________ .
| A．an underground lake was discovered |
| B．there was an underground lake discovered |
| C．a lake was discovered underground |
| D．the workers discovered an underground lake |
While building a tunnel through the mountain, ________ .
|
A．an underground lake was discovered |
|
B．there was an underground lake discovered |
|
C．a lake was discovered underground |
|
D．the workers discovered an underground lake |
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