You could hear water pipes cracking __________ they __________ because of the cold.

充值活动已开启，快来参与吧

当前位置：高中英语 /

1. You could hear water pipes cracking __________ they __________ because of the cold.

A . when; burst B . before; were burst C . when; were burst D . before; burst

使用过本题的试卷

人教新课标高一英语必修一 Unit 4 Earthquakes 单元练习