We will have no water to drink_____ we don’t protect the earth. A.until B. before C. though D. if
A.A
B.B
C.C
D.D
正确答案是D
We will have no water to drink_____ we don’t protect the earth. A.until B. before C. though D. if
A.A
B.B
C.C
D.D
正确答案是D