某城镇污水处理厂设计流量为20000m3/d，原污水经初沉池处理后出水的BOD5为1

根据短文内容，完成所给任务。
Four notes
Mr and Mrs Brown have two children: Mike and Liz. The whole family are all busy, so they often leave notes for each other. Look at these four notes of today.

① 3:30 pm To Mike Mr Tyler rang. No football practice today. I’m going to Donna’s house to play and be back at 5:00 pm. Liz

 

② 4:00 pm To Liz It’s your turn to walk the dog. I have to do my homework after school. Remember to play with Teddy when you get home! Mike

 

③ 6:45 pm Has anyone seen my tennis shoes? I’m in my bedroom doing my homework. Mike

 

④ 9:00 pm I saw your shoes this morning. They smelt terrible so I put them outside the back door. Good night, dears! Mum

小题1:Liz will be back home at           .
小题2:           should walk the dog today.
小题3:Mike is doing his              at 6:45 pm.
小题4:Mike’s tennis shoes are             the back door.
小题5:According to the notes. Teddy is the             in the family.