Taobao.com is a free site, _________ visitors can not just purchase almost all kinds of products but open their own online shops.

it or not, many of us see that higher education equals a diploma, which ______ provides us with opportunities for a better life.

The earth could be younger and took more than three times longer to form than _______ thought, according to a new study

I woke up with______ bad headache, yet by______evening the pain had gone.

The success of a government should be measured ____the health and happiness of the people as well as the development of theeconomy