题目内容
He doesn’t know ________ they will plant trees on Saturday or not.
A.weather | B.whether | C.if | D.that |
B
考查固定搭配。Whether...or not“是否......”,句意“他不知道周六他们是否去种树。”故选B。
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题目内容
A.weather | B.whether | C.if | D.that |