Many young people volunteer in the northwest of our country .
| A．work | B．working | C．to work | D．worked |
We have decided to try ________ best to raise more money for the local charity.
| A．us | B．our | C．we | D．ours |
Could I have an early morning call ________six o’clock tomorrow?
| A．on | B．to | C．at | D．in |
I won't take part in Julie's birthday party ________I am invited.
| A．unless | B．after | C．because | D．if |
—Will you go and see the movie Net Mother with me?
—Thank you. But I _____it already.
| A．saw | B．have seen | C．see | D．will see |
—Ted, Could you please________the trash?
—Of course, Mom.
| A．take after | B．take off | C．take out | D．take care of |