There must be a rain last night, _______ the ground was wet.
2024-01-17中级语法
There must be a rain last night, _______ the ground was wet.
A.because
B.as
C.for
D.since
正确答案是C

There must be a rain last night, _______ the ground was wet.
A.because
B.as
C.for
D.since
正确答案是C