一道选择题5，请解释
Because it was a Sunday when the visitor were to come the sudents were waiting to meet them with a bad _________ Aname Bgrace Cintention Dface
Because it was a Sunday when the visitor were to come此句是由Because引导的从句，后面the sudents were waiting to meet them with a bad face才是主句。句子意思为：因为参观者是星期天来，所以学生们苦着脸等他们到来。a bad face表苦着脸。
先D，句子意思为，因为参观者是星期天来，所以学生们苦着脸等他们到来
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