8.      Be industrious, and you will get the scholarship.
If you are  industrious, and you will get the scholarship.

9.      Don’t be naughty, and you will be given a gift.
If you aren't naughty, you will be given a gift.

10.  If the film isn’t funny, I will turn the TV off.
Unless the film is funny,  I will turn the TV off.

11.  If Mai doesn’t tell me the news, I won’t know it.
Unless mai tells me the news, I won’t know it.

12.  If he arrives early, I will invite him for coffee.
Unless he he arrives early, I won't invite him for coffee.

13.  Unless Lan sends me the document, I can’t finish the project
If Lan sends me the document, I can finish the project

14.  Unless he is lazy, he can get mark
 If he was lazy, he could not  get mark

15.  Unless they come, we can’t satrt the meeting.
If they come, we could satrt the meeting.