He was in hospital for six months. He felt as if he was _______ from the outside world A cut out Bcut off C cut up Dcut through
Let’s clean our classroom, _____?
Everyone _____ do his best for the modernizations of our country.
31. He _____ have come here yesterday, but he didn’t.
He ought to win the first prize, _____ he?
I missed the last bus, so I _____ go home on foot.