---Answer the doorbell, please. It must be your uncle. ---It Heidi. She’s coming over this morning to help me with my math.
When you learn English,don’t try to learn too many words________.It’s best to review frequently.
He is wearing sunglasses to________his eyes from the strong sunlight.
It is________to go into the deep forest,for the snakes may make you________.
—Shall we eat out or stay in? —________.
—We’d better hurry up;we’ll be late. —________?Do you really want to listen to the boring lecture?