Question

【题目】________ it is raining heavily, we have to stay indoors at school.
A.As soon as
B.Since
C.Though
D.Unless

Answer 1

【答案】B
【解析】考查连词辨析。句意：因为在下大雨，我们必须要学校等在室内。A. As soon as一……就……；B. Since因为，既然；C. Though虽然；D. Unless除非，如果不。下大雨是等在室内的原因，故选B。