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
【正确答案】
D
【答案解析】
[考点] 祈使句 [解析] 对祈使句进行否定时，直接在前面加don't。
提交答案
关闭