【題目】Huawei the plan to develop its own operating system since 2012.

A.hasB.haveC.havingD.has had

【答案】D

【解析】

句意:華為從2012年就已經(jīng)有計(jì)劃開發(fā)自己的操作系統(tǒng)了。

A. has有,第三人稱單數(shù);B. have有,動詞原形;C. having有,動名詞;D. has had已經(jīng)有,現(xiàn)在完成時(shí)。有計(jì)劃做某事have the plan to do sth,空格處缺少謂語動詞,故排除C,由since 2012確定為現(xiàn)在完成時(shí),故選D

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