题目内容
It is he frequently returns home late makes his parents concerned about him.
A. because; thatB. that; that
C. 不填; thatD. what; that
B
【解析】选B。考查强调句型。句意: 是他经常回家很晚使他父母为他担心。被强调部分that he frequently returns home late为主语从句。
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