—What are they doing?
—They________helping an old man cross the street．
| A．were seen |
| B．are seen |
| C．be seen |
| D．saw |
The little boy urged his mother________a toy truck for him．
| A．to buy |
| B．buying |
| C．buy |
| D．buys |
I’m looking for a place________trees grow in water．
| A．that |
| B．which |
| C．what |
| D．where |
The old man wants to sell all the things________money for Children’s Hospital．
| A．to raise |
| B．to keep |
| C．to give |
| D．to bring |
Tom likes making model toys________used soda cans．
| A．of |
| B．out |
| C．off |
| D．out of |