He is running __ 5 miles an hour.A.atB.by为什么是第1项?不会又是固定搭配之类的吧?

i'm athletic .he is athletic too 合并 i am __ __ __ he is he is running 填什么 You nose is running.Are you __? He is running __ 5 miles an hour.A.atB.by为什么是第1项?不会又是固定搭配之类的吧? who is in __(possess) of this building?I'm out of __(breathe) after running up the stairs. Bill is a great running star.He is very well.中,running为什么要用running? he is good at running?怎么提问 He is running quickly.(改为感叹句） he is running是主系表结构吗 he is running the 100 metres He likes ___ very much,but he does not like __ this morning.A,running, running.B, run ,runC,running,run D running ,to run 介词填空：The dog is running __ the grass He is __ Class Two,__ One. Is he young?Ye,__ __. He is famous 同义句He is __ __ Bob has a blue bike同义句The __ of the blue bike is BobAmy was not at school yesterday because she was ill 同义句Amy was __yesterday __ __ her __He is running for exercise 划线部分提问—————___ is he running ___? Look!There he (come).He is running to us. he is good at running.he runs f-- 的填词