—Anyone called me when I was out?  —Yes. A man did and he called ______ John.

—Who is the girl stanging over there? —Well,if you_______ know,her name is Kate.

— What do you think of your trip to Great Britain?  — Wonderful! And the best part was visiting 　　　. 

________are in the same class. We are good friends. 

The boy is only four years old, but he can swim ______ the lake.