Question

--- I didn't get to school on time          I was so tired and slept late．

--- I was late          the bad weather， too．

A. because； because    B. because； because of

C. because of； because    D. because of； because of

Answer

B

【解析】

句意：—我没有按时到校因为我太累了并且睡得晚。—我也迟到了，因为糟糕的天气。because和because of均表示“因为”，前者引导原因状语从句，故需要接完整的句子，后者接名词、代词或动名词及其短语。I was so tired and slept late.为完整的句子，故用because引导，the bad weather为短语，故用because of连接，故选B。