What will you do during the coming winter vocation?—— I don’t know, but it’s about time ______ something

re ______ we take the safetystandards, the further we can speed up the development of the school busindustry

There is ________ in population that a food shortage is caused

“There is a great potential for the development of Sino-US trade, ______ is in line with the interests of the two countries and their people,” Wu said

The cake is too expensive. Would you like to show me a _______one —Sure. Here you are.