Various efforts________in the past decades to protect the environment．（　?。?/h1>

A．had made	B．have made
C．were made	D．have been made

【答案】D

【解答】

【點評】

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發(fā)布：2024/10/25 9:30:2組卷：231難度：0.9

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A．was cut	B．will be cut
C．will have been cut	D．has been cut

A．will be made	B．is made
C．is being made	D．has been made

A．have shown	B．have been shown
C．were shown	D．will be shown

Various efforts________in the past decades to protect the environment．（ ?。?/h1>