Помогите пожалуйста ) срочно спасибо)

1)How much is it?
2)I want to buy a present;
3)Can I have two,please?
4)How can I help you?
5)Here you are;
6)How about.

A.-Good morning._____________
B.-Good morning._____________ for my little sister
A.-______________this doll?
B.-That's a good idea.it looks beautiful.______________?
A.-it's three thousand rubles.
B.-Can I have a smaller doll?
A.-_______________it costs 500 rubles
B.-Good.i'll take it.Thank you.

нужно вставить слова помогите пожалуйсто срочно надо сегодня
think about your _____________
first ask your parents_________
before you go trick-or-treating_______
you shouldn't trick-or-treat____
don't go without your parents______
be very_______ stangers
You shouldn't ________a house with a_____
Your _______should check your candy before you eat it.