Mary isgirl, but she knows a lot about science.
| A．a eight-year-old | B．eight-year-old |
| C．eight years old | D．an eight-year-old |
Find the answer _____ the question, please.
| A．of | B．with | C．to | D．for |
It is a good time _____.
| A．sing | B．to sing | C．singing | D．sang |
They each _____ a CD in their bags.
| A．have | B．has | C．is | D．are |
What abouta party? Good idea.
| A．have | B．to have | C．having | D．has |