Kate is my good friend. She often ____ a smile ___ her face .
— Excuse me, may I borrow your Chinese-English dictionary?— OK, here you are. But you can it for only two days.
Could you tell me ?
— I usually go to bed late at night. And you?— .
He found very difficult the math problem.
The students are looking forward to a good result in the final examination, aren’t they?