—Who________your parents talking________？
—They are talking to my brother．
| A．are，／ |
| B．is，／ |
| C．are，to |
| D．is，at |
Some ______are ______their time to help the poor in underdeveloped countries.
| A．volunteer;volunteer | B．volunteers;volunteering |
| C．volunteering;volunteers | D．volunteers;volunteers |
We need to _______a plan for the coming party.
| A．come up | B．come up with | C．catch up | D．catch up with |
Could you help _______ the classroom? It’s dirty.
| A．clean up | B．set up | C．cheer up | D．use up |
I want to _______ kids_______ their school work.
| A．help; to | B．helping; with | C．help; with | D．helping; to |
Our teachers often tell us not _______ the street when the traffic light is red.
| A．cross | B．to cross | C．crossing | D．crossed |