问题

Let’sgoclimbingthemountainsifit ______thisweekend.—Butnobodyknowsifit ______.[ ]
A:isfine; willrain
B:willbefine; rains
C:willbefine; willrain
D:isfine; rains
B:willbefine; rains
C:willbefine; willrain
D:isfine; rains
正确答案是: