_______, he knows a lot.
— Have you read this book?— Yes. But that one is ________ worth reading.
Maybe you have been to many countries, but nowhere else ___ such a beautiful palace.
—How are you getting on with your business? —I'm glad to say it is ________.
—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.