câu hỏi đuôi
I am late, aren’t I?
It isn’t raining, is it?
You’ll be back soon, won’t you?
Tom was at home, wasn’t he?
They must work hard, needn’t they? 
She must be a very kind woman, isn’t she?
You must have stolen my wallet, haven’t you?
I am wrong, aren’t I?
Let’s have buttered scones with strawberry jam for tea, shall we?
Nobody remembered my date of birth, did they?

câu hỏi yes no
Isn't Mary going to school today?
Was Mark sick yesterday?
Have you seen this movie before?
. Is he a scientist? 
Did they arrive last night ?
Does he play football every sunday?
Will they come here on Thursday?
Has she told us the truth?