题干

The reason ______she didn’t come to school was_____
she had to look after her sick mother.
A.because ; whyB.that ; because
C.why ; thatD.which ;that
上一题 下一题 0.85难度 单项选择 更新时间:2010-07-15 11:00:19

答案(点此获取答案解析)