新概念英语第一册81~91习题1

新概念英语第一册81~91习题1
________ the workers _______(finish) yet?No,they _______ still _______(work) on it now.
英语人气:473 ℃时间:2020-01-27 11:52:08
优质解答
Have the workers finished yet?No,they are still working on it now.
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