新概念英语第一册81~91习题1____ the workers _(finish) yet?No,they _ still ___(work) on it now.

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新概念英语第一册81~91习题1________ the workers _______(finish) yet?No,they _______ still _______(work) on it now.
新概念英语第一册81~91习题1
________ the workers _______(finish) yet?No,they _______ still _______(work) on it now.

新概念英语第一册81~91习题1________ the workers _______(finish) yet?No,they _______ still _______(work) on it now.
Have the workers finished yet?No,they are still working on it now.

Have the workers finished yet?No,they are still working on it now.

has the workers finished yet ?no. they are still working on it now.

Have the workers finished yet？No,they they still work on it now.

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