Where is Jane? —She went to Hainan Island last Sunday and will return _________six days.[ ]

It’s such along way. Please _____________ a bus to get there.

Clean-Up Day is coming. How to let more people know it?We could ______ advertisements after school.

What’s this?—It’s a machine which was invented in __________century in China.

Where are you from ?–I’m from Shanghai. It’s a very ______city.