成人英语三级考试

【单选题】There are eight tips in Dr. Roger's lecture on sleep, and one of them is: ______ to bed early unless you think it is necessary.


A．doesn't go
B．not to go
C．not going
D．don't go

网考网参考答案：D
网考网解析：
对祈使句进行否定时，直接在前面加don't。 查看试题解析出处>>