—This Math problem isn’t easy for Jack to work out, is it?—_______. He is far better at Math problems than we expected.
I don’ t mind _____the door.
—Shall we call a taxi? —Ok, Let me ______ the phone number for you.
If you _____ your study_____ your interest, you will like it.
I don’t dare ______ in front of the class.
I don’t know if he______tomorrow. If he ______, I______ you konw.