Do you know the answer_____ the question? [ ]

Mr. Li asks us to remember that __________ careful we are, _________ mistakes we will make.

Hurry up, Mum. The lights are turned on. Dad has been back.—It _________ be him. He has gone to Shanghai.

I often have chicken and fruit _____ dinner.[ ]

Daniel goes to school by bus, but he walks ________ after school.