题目内容
I didn’t come to school yesterday ________ I had to look after my grandma at home.
- A.because
- B.because of
- C.so
- D.but
A
because引导原因状语从句,because of后使用代词或者名词短语.
because引导原因状语从句,because of后使用代词或者名词短语.
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