Mrs. Valentine likes her teaching job very much and she considers teaching a(n) _________ career(职业).
A. shameful
B. humiliating
C. immoral
D. worthwhile
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Mike put a grape(葡萄)into his mouth and then _________ it whole.
A. lick
B. sip
C. suck
D. swallowed
Blue whales are the largest _________ ever to have lived.
A. fish
B. creatures
C. primates
D. siren
He planned to _________ his directorship next year because of his young age.
A. run for
B. retire from
C. choose
D. resign
Mozart is dead but his music _________.
A. disappeared
B. lives on
C. vanished
D. lost