Everyone has his or her advantages, and only _______ you do best can help to reach the goal and truly make a difference.
| A．discovering what |
| B．discovering whose |
| C．by discovering what |
| D．by discovering which |
‘Excuse me for breaking in, ______ I have some news for you.
| A．so |
| B．and |
| C．but |
| D．yet |
He found it increasingly difficult to read, _____ his eyesight was beginning to fail.
| A．and |
| B．for |
| C．but |
| D．or |
I’d like to study law at university _______ my cousin prefers geography.
| A．though | B．as | C．while | D．for |
People try to avoid public transportation delays by using their own cars, and this creates further problems.
| A．in short | B．in case | C．in doubt | D．in turn |
Scientists are convinced the positive effect of laughter physical and mental health.
| A．of; at | B．by; in | C．of; on | D．on;at |