When they hurriedly arrived home, they found their house ______ and a lot of things _____.

Could you tell me _______

I ______ go sailing on the lake.

May I have a look at your plan for the robot —-Sorry ,I’ve _____ it at home .

“Wechat”(微信) really makes a great _________ to people’s life. It’s easy for us to keep in touch with others.