Since the new speed limits ______，the number of accidents in the area has fallen strikingly．
| A．were introduced | B．introduced |
| C．have been introduced | D．have introduced |
—How do you like the film?
—________.
| A．I like it very much | B．I don't like it at all |
| C．It's very interesting | D．By understanding its plots |
—Oh，you sounded just like a native.
—________Why didn't you call us earlier?
| A．Good luck! | B．You did? |
| C．It's no surprise. | D．You are welcome. |
—What fruit is in season now?
—Pears and apples，________.
| A．I know | B．I think |
| C．I see | D．I feel |
—Your mum is very kind.
—Yeah.My mum is pretty considerate，you know what ________，she always arranges everything around me.
| A．she means | B．you mean |
| C．I mean | D．we mean |
—I have tried very hard to find a solution to the problem，but in vain.
—Why not consult with Frank？You see，________.
| A．great minds think alike |
| B．two heads are better than one |
| C．a bird in the hand is worth two in the bush |
| D．it's better to think twice before doing something |