题目内容
— Does Tommy love taking exercise every day?
— Yes. He goes jogging every day _______ it rains or snows heavily.
— Yes. He goes jogging every day _______ it rains or snows heavily.
| A．when | B．as | C．unless | D．if |
C
根据句子的内容，表示除非….，="if" not，故选C
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