_______ did you spend _______ painting? [ ]

You are well-dressed today．—Thank you．I want to _____ a good impression _____ the interviewer．

The duty of Project Hope is to help poor children, isn’t it?–Yes, it has built many schools ____ those children can study happily.[ ]

一Excuse me, but where’s Mrs. Liu? I want to ask her for some advice.一Shethe library. You can find her there.

Would you like to go to the concert with me tonight?–I’d love to, but of us two has tickets. Do you have some?