our earth, or else it will be no longer fit for us to live on.

There ________ more buildings in ten years.

Why would some workers in Foxcon die _____ continue working in the factory? — Psychologists say they are under too much pressure. [ ]

I called you but you didn’t reply to me yesterday.—Oh, sorry, I ________Dad, where are we going?（《爸爸去哪儿》）at the cinema.

How much did the new watch your sister?—She 350 yuan for it.