George is very healthy. He _______ goes to the doctor.
— The game is too hard for me. I will certainly lose. — You never say no before you try.
— Excuse me, could you tell me where I can buy some? — Sure. There’s a post office at the first crossing.
I don't know________ they have passed the exam.
— Do you need any help? — Yes. I want to buy some novels. Could you please tell me ?
It took her some time ________ Chinese in class.