— It’s dangerous to swim in this river.— Yes, you are right. The government has _________ people not to swim in it.
— I am going to the Great Wall next week. — _______.
— _______ does your brother go shopping? — Sometimes.
______ can help us learn ______ about the world.
There is a teacher’s desk _______ of the classroom. Mr. Liu is standing _______ of it.
_______ takes her about ten minutes ________ to school by bike every day.