All Mrs Smith's efforts to tidy the room were _____ because her grandson soon made a mess of it again.
A.at all costs | B.at random |
C.in vain | D.in return |
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All Mrs Smith's efforts to tidy the room were _____ because her grandson soon made a mess of it again.
A.at all costs | B.at random |
C.in vain | D.in return |
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