---All the oil in the world will have __________ some day. ---Yeah. What shall we use for power at that time?
— I’m not going swimming this afternoon. — ______. I have to help my mother do some cleaning.
It is _______ to do small things well than plan to do big things which can’t be finished.
— Look! What’s that in the sky? — birds!
number of the students in Class Eight, Grade One is 40.
My sister got up late this morning. She only had .