—I’m green at everything.
—Don’t worry. ______ you get older，you will get more experience.
A. As B. Till C. Unless D. Since
No one in the department but Tom and I ______ that the director is going to resign.
A. have known B. know
C. knows D. am to know
We shouldn’t complain about being poor, because many families are much ______ after the big earthquake.
A. better off B. worse off
C. well off D. badly off
It is ______ of you to call on your aunt from time to time.
A. common B. convenient
C. considerate D. concerned
Scientists are convinced ______ the positive effect of laughter ______ physical and mental health.
A. of；onB. by；in C. of；at D. on；at
I don’t believe you. What you said just doesn’t ______.
A. make an impression
B. make sense
C. come as a surprise
D. go on
