Though _____ failure is the mother of success, everyone wishes to have ______ success.
| A．不填; a | B．the; a | C．a; a | D．不填;不填 |
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 |
A man with a big camera in his hands stopped me and asked, “Excuse me! Is there a post office around ______ I can have these posters sent to my friends?”
| A．that | B．which | C．what | D．where |
—The frequent terrible coal mine accidents killed more than 1000 people in China last year.
—_______.
| A．Quite OK | B．That’s the case | C．Certainly | D．I agree |