----- Your classroom is very clean. ----- Yes, it ______ every day. A. is cleaned B. cleans C. is cleaning
—_____ do you _____ the book? —It’s very interesting.
—How ____ can I ____ the books? —Three weeks.
—_____ is it today? —It’s Tuesday.
—It’s time _____ lunch. —OK. Let’s _____.
Mr. Wang _____ gets up early. So he is ______ late for work.