问题
选择题
_____has happened many times, children may get drowned in this river.
A．As
B．Which
C．What
D．That
答案
A
关系代词as 代替整个主句，放在句首用as, 不用 which。
搜题请搜索小程序“爱下问搜题”
_____has happened many times, children may get drowned in this river.
A．As
B．Which
C．What
D．That
A
关系代词as 代替整个主句，放在句首用as, 不用 which。