English is popular around the world and most people speak it _____ a second language. [ ]

Have you decided where to go for your summer vacation? –Not yet. We_________ go to Mount Lu. It is a good place for vacation.

Things made by hand are usually more expensive than _ produced in factories.

Must I hand in my report now? — No, you ________. You still have some time.

We can go to Beijing Railway Station by bus. — Why not ______ there for a change? [ ]