A brilliant idea occurred to him, ______ to his research in the lab.
We are told that more new teaching buildings ________ next year.
It is no use _______ about the coming exam.A. worry B worrying C worried D to worry
I don’t feel like ______ anything now, for I am so tired.
It was very important for us ________ happy every day.
-You look upset. -Yes, this is the first time I________ form home.