—Who telephoned you just now?— don’t know. I was about to answer the phone when it ________.
Customers are asked to make sure that they ____ the right change before leaving the shop.
Because the two countries were at _____ war, the people had ______ hard life.
—-______ —Certainly, it is my great pleasure.
Hurry up! The shop __ in five minutes.
The boy insisted that he __ old enough, and __ the right to make his own choice.