问题
选择题
They haven't decided ___ they will go for a drive on Sunday or not.
A．that
B．how
C．which
D．whether
答案
答案：D
whether or not意思是:是否.这里引导一个宾语从句.
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They haven't decided ___ they will go for a drive on Sunday or not.
A．that
B．how
C．which
D．whether
答案：D
whether or not意思是:是否.这里引导一个宾语从句.