{01} Mary had taken _____ to see that her guests had everything that they could possibly want.
A.efforts
B.pains
C.attempts
D.endeavors
解析: take pains to do sth.下苦功夫做某事:I"m grateful because you have taken pains to show me how to do the work. 本题选B。 {02} Jim"s close _____ to his brother made people mistake them for one another.
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