____________ (他们最担心的) is their 30 year old daughter who is still single.What wor

游客2023-07-23  18

问题 ____________ (他们最担心的) is their 30 year old daughter who is still single.

选项

答案 What worries them most

解析 此处考查主语从句。同时考查动词worry的用法。
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