Be careful _______to turn off the light.A.not forget B.not to forget C.forget not D.forget to not
问题描述：
Be careful _______to turn off the light.A.not forget B.not to forget C.forget not D.forget to not
答
B 动词不定时的否定形式 动词不定时做宾语 （不知道你能不能听懂）
答
b
be careful to do/not to do sth.：小心做/不做
小心不要忘记关灯