—Well, you'd better not buy that shirt. Brown and black don't go together. — ________ I wear it with my other shirt?
He ___ at the enemy, without saying a word.
She didn't answer the phone.She ___ be asleep.
___ people gather there, talking about the film about Comrade Lei Feng.
I can't remember where I have put that book.Maybe they are ___ which one is not correct.
More than one student ___ that experiment.