____ I met Nelson Mandela was a very difficult period of my life.
— Can I pay the bill by check? — Sorry, sir. According to the rules of our hotel, the payment ______ be made in cash.
______ (W)word came that three Chinese astronauts had been successfully sent into ______ space.
________ from what she said at the meeting, she must have lied to all of us.
Some experts believe it is the grandparents who ________ for the spoiled child.
--- Let’s go shopping, shall we? --- Wait a minute. I ________ my housework and it won’t take long.