---I came all the way to inform you of the time and place of the meeting. ---You could have _____ yourself the trouble.
The athlete fell off his bike when he _____ down the hill.
There is ______ is called Mr. Smith in our workshop.
Young students are ______ not to smoke, either in or out of school.
The reason he was absent from class was his mother fell ill this morning.
The leader of the factory told us that very little ______ was made of the waste material in the past.