According to scientists, our mental abilities begin to____ from the age of 27 after reaching the highest level at 22.
| A．differ | B．shrink | C．fail | D．decline |
It _______ we had stayed together for a couple of weeks _______ I found we had a lot in common.
| A．was until; when | B．was until; that |
| C．wasn’t until; when | D．wasn’t until; that |
Why don’t you bring ________ to his attention that you are too busy to do it?
| A．that | B．what | C．that | D．it |
Out of the train_______, well-dressed and waving to the crowd.
| A．a tall man stepped | B．was stepping a tall man |
| C．did a tall man step | D．stepped a tall man |
— Do you know how Chinese acupuncture reduces pain?
— Well, well, _______. I’ve never read about that.
| A．I can’t tell you | B．you really have me there |
| C．there is some doubt | D．what a shame |
In many cities of China, if an ambulance is_______ in a traffic jam, police will respond to the emergency.
| A．held up | B．held back |
| C．held down | D．held out |