The first decade of the 21st century _____the breathtaking and non-stop development of China.

Don’t worry. Bill will help you look after your dog when you ________ away on business.

The little boy still needed the ______ 20 dollars to do with the things ______ .

一Are you going to have a holiday this year?— I’d love to. I can’t wait to leave this place_______.

Sam sits_______ Kitty.” Which is wrong(错误的)