I saw _____ eighty-year-old man with an umbrella on such a sunny day just now.

My parents were against my travel plan while my brother was __________ it

It is difficult for any of us to eat better, exercise more, and sleep enough, ________we knowwe should.

The art club is for members only. You can’t go in_______ you are a member.

I guess Tom and his sister Celia enjoyed ______ at the party.