The bell ______ the end of the period rang, ______ our heated discussion.
| A．indicating; interrupting | B．indicated; interrupting |
| C．indicating; interrupted | D．indicated; interrupted |
—Happy birthday!
— Thank you! It’s the best present I_________ for.
| A．should have wished | B．could have wished |
| C．may have wished | D．must have wished |
I showed several old friends of mine around the city, _________ surprise，the changes had been so great.
| A．whose | B．to whose | C．which | D．to which |
_______ his own experiences in Italy, Mr. White created this famous novel.
| A．Drawing on | B．Insisting on | C．Living on | D．Working on |
It’s impossible for him to escape ________ this time; he made such a big mistake.
| A．to punish | B．punishing | C．being punished | D．having punished |
—Who do you think will get the first prize?
—Mary, of course. She ________ for the competition for months.
| A．is preparing | B．was preparing |
| C．had been preparing | D．has been preparing |