May we leave the classroom now-No, you _______. You _______ to leave until the bell rings.

I must think of a proper gift for my mother，won’t be expensive but will make her happy.

Can you guess ______ the new schoolbag yesterday —Sorry, I’ve no idea.

I think your suggestions are of great ______ to me and they are well worth ______.

Is this _________ book —- Yes, please give it to ________.