—What do you think of the new bridge?—I have never seen _____ before.
— Are two students enough to help you carry the desk? — No, the desk is too heavy. I need ______ two.
— Could you please do some shopping for me, Mary? — Sorry, I ______ my homework.
— Can you cook eggs with tomatoes ? — Yes, of course. ______ can do it , because it is easy, I think.
The e-mail he sent to me ______ that he knew nothing about the earthquake happened in Japan.
If you have finished most of the work, you ______ start working so early tomorrow.