—I’m sorry．That wasn’t of much help．
— Oh, _______ . As a matter of fact，it was most helpful．
| A．sure it was | B．it doesn’t matter | C．of course not | D．thanks anyway |
My mother would not permit me back late.
| A．to come | B．come | C．coming | D．came |
—Do you mind if I open the window?
—.
| A．No, you can’t | B．Yes, of course not |
| C．Certainly, please | D．No, go ahead |
Great changes ______ in China in the past 20 years.
| A．took place | B．have taken place |
| C．were taken place | D．have been taken place |
His illness his absence.
| A．explained | B．because of |
| C．accounted for | D．is responsible for |
When the man was trying to break into the bank, he was caught by the police.
| A．in a spot | B．on the spot |
| C．off the spot | D．to the spot |