Every solid object ______ reflect a sound，varying according to the size and nature of the object．
| A．must | B．shall | C．will | D．should |
Nothing is so easy as___parents to raise their expectations of their children too high
| A．of |
| B．to |
| C．by |
| D．for |
China has been pushing the reform of public hospitals___all its citizens
| A．in charge of |
| B．for the purpose of |
| C．in honor of |
| D．for the benefit of |
—Why do you choose to work in an international travel agency?
—Well,you know,English is my___.So it is my best choice
| A．strength |
| B．talent |
| C．ability |
| D．skill |
Do you think this shirt is too tight___the shoulders?
| A．at |
| B．on |
| C．to |
| D．across |
Can you tell the___difference between the words”require”and “request”?I sometimes get puzzled by their meanings
| A．dramatic |
| B．regional |
| C．apparent |
| D．subtle |