--Look at the people in the lake. They are playing happily. Let's ________, too.

--Good idea!

1. A.
   go hiking
2. B.
   go camping
3. C.
   go skating
4. D.
   go boating

-Look at the people in the lake．They are playing happily．Let's ________, too．

-Good idea!

A．go hiking           B．go camping         C．go skating          D．go boating

Look at the people _ ____．

A．playing football                  B．are playing football

C．play football                        D．plays football