Question

【题目】—Betty's bike broke down on the way to the school today.
—That'sshe was late again.
A.because
B.why
C.when
D.what

Answer 1

【答案】B
【解析】句意：-贝蒂的自行车今天在去学校的路上坏了。-那就是她又迟到的原因。A. because 因为，引导时间状语从句；B. why为什么；C. when什么时间；D. what什么。Why从句在句中做表语。 故选B。