—Tom must be at home because the light in his house is on. —He ____ be at home, because I saw him playing basketball on the playground. A. can B. mustn’t C. can’t
---Why did _____ take Aunt Alice almost an hour to get home ? ---I don’t know . Maybe there was something wrong with her car .
---I’m sorry ,Mr.Wang. I _____ my homework at home .---That’s OK. But don’t forget ____ it to school tomorrow.
—Lisa didn’t come to school yesterday, did she ?--________ , though she was not feeling very well.
---Do you like the Moonlight Sonata ?---Sure , it sounds really ________.
-- weather it is! Let's go out and have a walk.-- I'd love to.