What are you doing, Jack—I’m looking for some information about famous people ______ can help memake a poster.

When I met him the other day，it was the first time we ________ each other since we were at school.

_ children get older, they become more and moreinterested in everything.

.As long as we are united, there will be nodifficulty in the world that we can’t__________.

What’s thirty and fifteen —It’s _______.