题目内容
?Is Tom at school today?
?No. He's at home ________ he has a bad cold.
A. because
B. if
C. until
D. before
答案：A
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— Is Tom at school today?
— No, he is at home ______ he has got a bad cold.
|
A．so |
B．or |
C．because |
D．if |