the construction of the Qinghai-Tibet Railway,33 migration overpasses have been made_______for herds of Tibetan antelopes togo through their breeding grounds

You will fail your next exam ______you start to work hard at your study now.

To fetch water before breakfast seemed tome a rule ______

The fans can’t wait ______ to China.

It takes _______ money to help those in need; it also takes love.