__________ entered the office when he realized that he had forgotten his report.
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?