Richard's only three but he …….. swim very well.

Richard's only three but he CAN swim very well.

1 - d.

2 - c.

3 - b.

4 - a.

5 - e.

6 - g.

.1.-open the window.

-but i have opened the window.

2.i have seen the film.

3.he has opened the door.

4.they have cleaned the room.