--Is the man over there Mr. Brown?-- It _____be him. He is much shorter.A. must B. can`t C. needn`t
I can’t find my pen.Could you help______ find it ?
There is elephant on the grass .It is playing with a ball.
The fish smells , you can’t eat it.
I am sorry to have kept you for a long time.
Mr Green is very strict his students, and he is also strict his work.