______a teacher, John thinks that his duty is to help the students to become better learners.[ ]

What can I do for you, sir? — It’s so hot now. Could you give me _____________.

Are you going _____vacation next month?[ ]

Have you finished your fashion design? – Not yet. I’ll finish it if I _______ ten more minutes.

People celebrate Chinese New Year __________ from house to house.[ ]