The gentleman the little children followed suddenly stopped and looked as if __________ whether he was going in the right direction.
The maths problem remained confusing to the boy although __________ over and over.
Having now _________ 40, he feels that his football career is coming to an end.
“We’ll make public schools __________ can be,” said the President in the speech.
–Have you thought of a topic for your article yet? –No, I _____ a lot about it, but I haven't decided.
My command of English is not _____ yours.