问题补充:
He doesn’t know they will plant trees on Saturday or not.
A. weather
B. whether
C. if
D. that
答案:
A. weather
(答案→)B. whether
C. if
D. that
解析: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。
时间:2019-07-27 19:02:17
He doesn’t know they will plant trees on Saturday or not.
A. weather
B. whether
C. if
D. that
A. weather
(答案→)B. whether
C. if
D. that
解析: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。