— I need to advertise for a roommate for next term. —______? Mary is interested.
| A.What for | B.Why not | C.So what | D.Why bother |
She _______ his number in the phone book to make sure that she had got it right.
| A.looked up | B.picked out |
| C.looked for | D.made out |
Teachers have to constantly update their knowledge in order to maintain their professional __________.
| A.consequence | B.independence |
| C.competence | D.intelligence |
I don’t like fish, so I ________ eat it unless I was extremely hungry.
| A.needn’t | B.shouldn’t |
| C.can’t | D.wouldn’t |
I have no idea ____________ measures the government will take to stop the river from being further polluted.
| A.which | B.what | C.that | D.whose |
Scientists are convinced __________ the positive effect of laughter _________ physical and mental health.
| A.of; at | B.by; in |
| C.of; on | D.on; at |