Although you have lots of difficulties, you must _______your work.

We can use Wechat（微信） to talk with each other online.—Really? Could you please show me how ______it?

Tom told me his parents had arrived _____ Beijing. [ ]

Lucy is a(n) ______ girl and she doesn’t like talking much.

The number of the classes in our school is __________ than__________ of any other school in Nanjing．