-Excuse me.Could you wake me up when my friend______here?-Of course.But we still don’t know when your friend ____ here.
Don’t shout at him. He _______.
—Don’t do that again. Shame on you!—_______
—Would you mind _______here?—I’m sorry about that. I’ll go somewhere else.
—Would you like to climb mountains with me this Sunday?—I’d love to. But I _______ play table tennis against Class Three.
I think _______ our duty to keep our environment clean and tidy.