如下：They _____ give up halfway.What a shame!A.are B.be C.did

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如下：
They _____ give up halfway.What a shame!
A.are B.be C.did D.does
题干的意思是：“他们半途而废了.多遗憾!”
正确答案是C ,但为什么?
第一句是什么时态?
如果用did 可以,那用 do （我知道被选项中没有do,我的意思是抛开备选项来说.）
hhj12075分析得有道理，但后半句翻译得不对，应该是“真可惜”或“真遗憾”。
真遗憾，最佳答案不能给您了。

这个是强调谓语的句子.对过去事情的强调,用did 后面谓语用原形动词
可以翻译成真的或者的确
他们真的半途而废了.太可惜了!

Where did they( a.it put up b.their tent put up c.put up it what are they talking _____ over there A.with B.about C.for what are _____?A.this B.that C .it D.they They went to the park,_____?A.It's red B.do they C.did they They are all _____ .A.English B.Chinese C.Japanese 1.“_____ give up,then you can be successful." A:Always B:exe what a shame是什么意思 What a shame A:What are they B:They are ______,_____,_______and _______.如 Please _____ quiet ,children.A.are B.is C.be What are they ( ) A talking B talking about C looking __lovely kittens they are!A:How B:What C:Where