It__outside.You'd better take an umbrella with youA.rainsB.is raining C.rainedD.has rained

It__outside.You'd better take an umbrella with you
A.rains
B.is raining
C.rained
D.has rained

rain下雨,这个动作正在进行,所以用现在进行时,
选B

A
外面正在下雨，所以要带伞