Nowadays, most people,in order to keep fit,prefer walking to driving ____necessary.
While reading an interesting story book in my room,______________.
Mr.Black is willing to do ______________ Mrs.Black tells him to do.
Lora,you ____________ leave all your books on the floor like this!
I must admit you _____________ but I'm afraid the answer is still no.
Paul fell down and broke his wrist,____________ was a pity.