—Mum, can I help you with the cleaning?
—Thank you, dear. But you are ______ now. You must wait till you are _______.
| A．too young; too old | B．too young; enough old |
| C．so young; enough old | D．too young; old enough |
A lot of foreigners__________ familiar with the famous places of interest in China．
| A．am | B．is | C．are | D．be |
The chemicals in the vegetables and fruit are bad__________ our health．
| A．from | B．with | C．of | D．for |
Wow! Ten students in our class will celebrate their fourteenth birthdays__________ October!
| A．in | B．on | C．at | D．to |
My parents showed__________ some old pictures that brought back sweet memories．
| A．I | B．me | C．my | D．mine |
Perhaps the famous football star won’t play__________ football any longer．
| A．a | B．an | C．the | D．／ |