问题
选择题
I didn’t go to bed _______ my sister came back.
A.because
B.until
C.if
D.but
答案
B:
not···until 表示直到···才,为固定搭配,故选B
I didn’t go to bed _______ my sister came back.
A.because
B.until
C.if
D.but
B:
not···until 表示直到···才,为固定搭配,故选B