LIBRARY RULES
Don't make any noise.
Be quier
Don't eat or drink
Be careful with the
books
Don't leave books on
the table when you
leave
Put the books back in
the night place

Посмотрите на правила библиотекии сделайте предложение с обязательным и не обязательным

1 Sharon goes to school on foot,doesn't she?
2 Jerry and Peter saw the accident,didn't they?
3 Sheila prefers tea,doesn't she?
4 Manuel wasn't born in the USA,was he?
5 You have a serious problem,don't you?
6 They will clean the house,won't they?
7 Martha and Lewis don't like fish,do they?
8 You speak Portuguese,don't you?
9 Our sons can't swim,do they?
10 She has got a new car,hasn't she?
11 Your brother is going to the disco tonight,won't he?
12 The students haven't got new computers,did they?
13 You are my best friend,aren't you?
14 Mark helped you,didn't he?

I recently watched a short news report about a study in a chinese university where they tried to find out whether men are more vain than women. The researchers made appointments with their subjects to be interviewed and each has to wait in a waiting room before being interviewed. In each room there is a one way mirror where researchers can video tape the subject's action without being seen. In that study, men looked at themselves in the mirror more than the women. 

Could men be more vain than women?