Those are my twin sisters. _______ of them are interested in soap operas.
| A．Each | B．All | C．Both | D．One |
I will congratulate him________winning the singing competition．
| A．of |
| B．with |
| C．on |
| D．in |
She wants to learn more about American history．She is thirsty________such knowledge．
| A．at |
| B．of |
| C．for |
| D．with |
Try singing some English songs，and you’ll find it interesting________a foreign language．
| A．learning |
| B．learns |
| C．learn |
| D．to learn |
The more you smile，the________you will feel．
| A．happy |
| B．happier |
| C．happily |
| D．more happily |
—I can’t stop smoking，doctor．
—For your health，I’m afraid you________．
| A．may |
| B．can |
| C．have to |
| D．need |