Mr Jones, a professor, ____ for his excellent lectures, is popular with his students.
| A．known | B．knowing | C．to be known | D．having known |
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 |
She is __________ the newspapers to be thrown away and putting away the rest.
| A．sorting out | B．figuring out |
| C．making out | D．turning out |