Mr. Smith is busy these days ________ a new book on how to develop a child’s reading skill.
---What shall we do tonight then? ---_________--whatever you want.
---Try not to work yourself too hard. Take it easy. --- Thanks. _________
—The trip shouldn’t take more than an hour. —_______.It is at least two hours.
—I’m sorry for being late. I should have phoned you earlier. --_________. I’ve just arrived.
—Goodbye, John. Come back again sometime.—Sure. ______.