—Shall we go to visit Mr. Wang now?—Mr. Wang________here now. He left for Shanghai by air this morning.

 ——Can I get out in the daytime?——No. The school rules state that no child _____ be allowed out during the day, unless accompanied by an adult.

--- I can’t find my purse anywhere . --- You ___ have lost it while shopping .

— Who’s that man in our classroom? It ________ be Mr. Brown. He is much taller.— You mean the man in white? He is an exchange student from England.