_ we were walking along the river, we heard a cry for help.
#55724
A
While
B
Until
C
After
D
Before
推荐题目
I am sure you will make it in the end _________ you have worked so hard.
#57253
A
so
B
although
C
but
D
because
My sister ______ go to bed _______ my mother came back last night.
#55654
A
not until
B
doesn't; until
C
didn't; until
D
aren't; until
