Bob is ___________brother.
| A．Lucy’s and Lily | B．Lucy’s and Lily’s |
| C．Lucy and Lily | D．Lucy and Lily’s |
He’s read this book before, _____?
| A．hasn’t he | B．doesn’t he |
| C．isn’t he | D．wasn’t he |
_____ of the teachers are women in our school.
| A．Two third | B．Two threes | C．Two thirds | D．Second three |
We must plant more trees after we _____ every year.
| A．cut off them | B．cut them off |
| C．cut down them | D．cut them down |
The supermarket provides customers _____ plastic bags for free.
| A．on | B．with | C．of | D．in |
I think it’s good _____ us _____ eat healthy food.
| A．for; to | B．for; for | C．to; for | D．to; to |