—Who telephoned you just now?— don’t know. I was about to answer the phone when it ________.
Being more realistic, the elderly have learned to focus on things that make them happy and let go of ____ that don’t.
The more active you are, the more likely you'll be ____ new friends.
Jackson refused to accept the reward because he thought he didn’t _______the honor.
The newly-founded company is faced with lots of challenges, _________ the financial problem is the worst.
What I am about to say is that nobody can ______ this amount of work in such a short time.