We should let the children know the ______ of fire, and tell them not to play with it.A. rule B. influence C. danger
—Where have you _____?—I have _____the teachers’ office.
—Where’s Jill? —She ________ in the office. I saw her there just now.
There used to be a boarding school there, _______?
Would you please help me _____ the picture on the wall?
Not only I but also Tom and Jack _____ interested in English because it _____ useful.