I think playing________football is a good way to learn the spirit of teamwork.

－Look, your sister is playing the pianoover there. －She ______ be my sister. She has gone to America.A. mustn’t B.can’t C.shouldn’t D. may not

Can you swim or play chess _______ .

As for myself, I am ______interested in ______stamps.

When I got home, I was angry to find my room .