—Why did Mr. Green take his 7th grade students to the river yesterday afternoon?—________ the river.
----I’m sorry, but there is no smoking on this flight. ----Oh, I _____ that. Sorry, I won’t again.
___ ,she is experienced.
___, he was a man known to the people all over the town.
Use your head,___ you’ll find a good way.
___ happens, we’ll carry on the experiment.