A good teacher should encourage his students to ___

1Some insects_______ the colour of their surrounding to protect themselves.
A.taken in
B.take off
C.take on
D.take out
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2When you read, don't _______ every new word in the dictionary. Try to guess its meaning.
A.lookup
B.work out
C.give up
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3Where was it ______ you _______ our maths teacher?
A.where; came to
B.that; come across
C.that; came across
D.where;come to
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4—How could you________ my mother so easily in the crowd? —Because she stood out in her red dress.
A.pick up
B.pick out
C.take up
D.take out
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5It is an article________ from his works.
A.edited
B.adapted
C.adopted
D.heard
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6The house is finished at last. All their hard work has _____.
A.paid back
B.paid off
C.paid up
D.paid for
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7The police ________ the lost child and tried to find his parents.
A.took up
B.took in
C.took over
D.took after
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8'Steve's love and energy ______ and improve all of our lives.” Apple said about Steve Jobs' passing.
A.enrich
B.swap
C.rescue
D.found
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9He has been acting strangely these days. I can't _____ his actions at all.
A.account for
B.ask for
C.call for
D.stand for
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10In order to keep healthy, he _____ an hour every day to take exercise.
A.set up
B.sets down
C.sets aside
D.set out
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A good teacher should encourage his students to ____ the knowledge by themselves instead of just copying and memorizing what the teacher said in class.