下列句子中画线成语的使用，不正确的一项是（ ）

Mary is the best student in our class. I wonder whether anyone has got _______ mark in this examination.

Green economy offers a new model ______ people could both protect the climate and develop the economy, according to what Li said at the International Cooperative Conference on Green Economy and Climate Change

DIY mean you do something yourself instead of _____ someone to do it.

Scientists suggested parents _______ children do the housework to make money.