he _work out in his spare time to keep fit,_he?选择B为什么,

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he ___work out in his spare time to keep fit,___he?选择B为什么,
he ___work out in his spare time to keep fit,___he?
A need ,needn't B needs to ,doesn't C needs ,doesn't D need ,don't

"need"可以做实义动词也可以做情态动词,做实义动词时 ,B中是“need to do.."的句型,这时反问句后半部分要用相应的实意带动词“do”,这里是第三人称单数形式,所以用“does”.如果选A,“need ”是作为情态动词使用,反问部分,用相应的情态动词“need”.我个人认为答案A、B应该都是对的
再问：怎么区分是否是情态动词呢？

he ___work out in his spare time to keep fit,___he?选择B为什么, He often listen to the (r.) in his spare time. He taught ___English in his spare time. ___ he works in his spare time.为什么填how hard 不填how hardly in his spare time or at his spare time Peter listen to CDs in his spare time. His parents used to play Majiang in their spare time,----- - He devoted all his time he could spare to helping me.的翻译 He worked in a foreign company at one time,___he went to Bri 英语句子改错 He also writes novels in his spare time except workin He takes lots of ____（exercise）in his spare time. He e___(忙于）almost all his spare time in reading 怎么填?