Parents ____ bring up their children under 16 and educate them properly.
| A．could | B．may | C．might | D．ought to |
"Once people think you are a liar, it's hard __________, no matter what you'll say, " father warned his son.
| A．for you to make yourself believe |
| B．for you to make yourself believed |
| C．of you to make yourself believing |
| D．of you to make yourself believe |
Obviously, __________ no one wants to be alone all the time, everyone needs some degree of privacy.
| A．if | B．but |
| C．although | D．because |
—They are quiet, aren't they?
—Yes. They are accustomed __________ at meals.
| A．talk | B．to not talk |
| C．to talking | D．to not talking |
Michael's new house is like a huge palace, __________ with his old one.
| A．comparing | B．compares |
| C．to compare | D．compared |
Sorry I'm so late, but you cannot imagine __________ great trouble I took to find your house.
| A．what | B．how | C．which | D．why |