You can imagine the difficulty they have ________ such a large population.
| A．fed | B．to feed |
| C．feeding | D．been fed |
—Jack said you got a unique watch for your birthday.
—Yes. Maybe it is not to the taste of , but I like it.
| A．anyone | B．everyone | C．none | D．nobody |
Hearing the news, he rushed out, ______ the book ______ on the table and disappeared into the distance.
| A．left; lain open | B．leaving; lie opened |
| C．leaving; lying open | D．left; lay opened |
Burglar alarms ________ at any time of the day or night serve only to annoy.
| A．go off | B．that are going of |
| C．that go off | D．which going off |
— Why do you look so worried?
—My computer broke down and my essay ______ unfinished since.
| A．had left | B．has left | C．has been left | D．was left |
Who will ______ your dog when you all go out for a holiday?
| A．keep down | B．look for | C．take to | D．attend to |