Many animals sleep a lot when young, but sleep much less when they get older, just is the case with human being.
He set off down the main street. He _____.
He wanted to measure temperatures. He wanted to _____ them.
He insisted _____ with her.
The news ____ was spreading all over the city proved to be incorrect.
_________ all the pupils in the school felt the same effect of small classes remains to be researched.