Boys and girls , more attention should be paid to ____the word correctly
—Will you please answer the door? It ________ be your sister. —Sorry, I ________. I’m feeding the rabbit.
--- Listen! David is talking happily with his mother in the next room. --- It ______ be his mother. She has gone to Yunnan to be a volunteer doctor.
— Must I finish my homework now? — No, you ________. You can go home now.
-- Must I return the book this week? -- No, you ______. You can _____ it for 20 days.
I like this room. You ______ see the mountains from the window.