题目内容
词汇运用
catch sight of
1)．_________ his mother, the boy stopped crying．
2)．
She watched the train until it went _________．
3)．I _________(看见)my former teacher just now, but very soon he turned a corner and I _________(看不见)him．
4)．Be sure to _________(照看)your luggage while you’ re at the airport．
答案：
解析：
解析：
1)．At the sight of
2)．out of sight
3)．caught sight of lost sight of
4)．keep sight of
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