问题:
In their country August 31st is a national holiday,________ everybody dances in the streets
A.which
B.as
C.when
D.because
In their country August 31st is a national holiday,________ everybody dances in the streets
A.which
B.as
C.when
D.because
A.which
B.as
C.when
D.because
参考答案: