This blue car ____________ be Bob’s bcause his car is black.

________ he is a child, ______ he knows much about the computer.

It is thought that Henan Shuanghui Industry Group Co., Ltd. ____take responsibility for its consumers. 

— _______ we clean the classroom at once?  — No, you _______. You _______ clean it after school. 

Li Lei isn’t ____ Liu Ming.