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I’m sorry that I can’t help _____ trees because I am busy with the homework.
A．to plantB．plantingC．plantedD．plants
A
詞組辨析題。can’t help to do sth 不能幫助做某事；  can’t help doing 情不自禁做某事。句意：很抱歉我不能幫你種樹因?yàn)槲颐χ鴮懽鳂I(yè)。 選A
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