Sam, come downstairs, please. I need your help.—Sorry，mum. I on the phone..

The best time Wuxi is in spring.—Yes, I think so.

.Hardly_______when the fans began to scream with excitement.

Excuse me. Do you know ______ the theater?—There’s one next to the library.

The panda is a kind of animal________ can be found only in China.[ ]