题目内容
We were swimming in the lake suddenly the storm started.
| A.when | B.while | C.until | D.before |
A
考察固定句型。Be doing sth when…正在做某事在这时…结合句意可知A正确。句意:我们正在湖里游泳在这时突然开始下暴雨。
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| A.when | B.while | C.until | D.before |