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It is ______ to improve the working conditions for the construction workers.
A.worthwhileB.worth C.worthyD.worthy of
A
句型辨析。 Worthwhile (adj) 值得的worthwhile 用于下列句型It is worthwhile doing sth./ to do sth.  干某事是值得的worth  用于下列句型:sth. is worth sth/ doing此句型中只能用doing, 不能使用被动。 worthy 用于下列句型:sth. be worthy of sth/ being done     sth. be worthy to be done。故选A。
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