-- The classroom looks like a mess!-- Yes, but who left the waste paper ______ around?
—Did you look up the time of trains to Shanghai? —Yes, the early train is ________ to leave at 5:00 am.
—Who is the man, actually? —I don’t know for sure. But I think he can be _______ but a teacher.
—______ you got to know my telephone number? —Through a friend of yours.
Jack is good, kind, hard-working and intelligent. _____, I can't speak too highly of him.
It isn't so much whether he works hard; the question is whether he works _____.