The machine has been used many years. It’s no wonder that it doesn’t work well________.

Problems relating to people’s livelihood have been the focus of the government, especially _______Premier Wen Jiabao included them in his government work report last year.[ ]

Your shoes are so old. Why don’t you buy a new pair—Because I ______ all my money on an MP5.

There are forty students in Class Four. And of them girls.

Chinese students must_______ their hands first andthen _______ to speak in class.