Because it is raining outside,___we can't play basketball on the playground.

问题描述:

Because it is raining outside,___we can't play basketball on the playground.
A.Because;/
B.Because;so
C.Because;but
D.Because;or
不是选B吗

选A,because不能与so连接使用,而这句是承接关系,所以选A