On Sundays there were a lot of children playing in the park, and _______ parents were seated together joking.
| A．their | B．whose |
| C．which | D．that |
Most of the people _____ to the party were famous scientists.
| A．invited | B．to invited |
| C．being invited | D．inviting |
I saw the boy _____ out a moment ago.
| A．run | B．runs |
| C．how to run | D．running |
He was made _____.
| A．go | B．gone |
| C．going | D．to go |
Returning to the room, _____.
| A．the book was lost | B．I found the book missing |
| C．the book was missing | D．I found the losing book |