— Who’s that boy reading in the garden? Is it David?— It ____________ be David. I saw him in the classroom just now.
Could you tell me the ________between the twins. They almost look the same.
---Are you free next week? ----I don’t think so. These days I’m very_________.
---Did you have fun in the countryside yesterday? ---Yes ._______,we felt cold and tired in the end.
My parents are very happy about my goodin life.
--- Mr Wang is serious about his work。 ---You’re right, He doesn’t stop workinghe’s really tired.