We _______ talk loudly when we see the sign “ Be quiet ”on the right. 

––Are you _______ “Planting online vegetables”?   ––No, I think it’s a waste of time. 

As it turned out to be a problem of no importance , we     so much time looking into it . 

—The traffic is heavy now, so Mike       come late.—Let’s wait ten more minutes.

—Look at the man in the classroom! Is he Mr. White?—No, it __________be him. He’s eating in the dining hall.