---Hello,canIspeaktoMr.Green,please?
---I’mafraidnot.He______ameetingnow.
A、willhaveThroughout_______ history, English language has gone through many changes.
MrHuang____toKunming.He’llcomebackintwoweeks.
-Look! Someone_______ the floor. It's clean.
-Well, it wasn't me. I went shopping just now.
Whoseeraseristhis?
--It's________.
Beforeyouleavetheclassroom，please__thelights.
