题目内容
Joan saw her boyfriend off at the railway station. She waved until the train was _____.
A. in sight B. out of sight C. at first sight D. lost sight
【答案】
B
【解析】 略
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Joan saw her boyfriend off at the railway station. She waved until the train was _____.
| A.in sight | B.out of sight | C.at first sight | D.lost sight |