__________ it is true that a student’s most important goal is to do well in his or her studies, it doesn’t need to be the only goal.
| A．While | B．As | C．When | D．Before |
‘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 |