There ________ many changes to Beijing over the past years.

A．a(chǎn)reB．haveC．has beenD．have been

D

解析試題分析：There be句型表示“某地(或某時)存在有某人(或某物)，而并非某地(某人、某物或某時)擁有什么東西”，句中有若干個名詞作主語，動詞be常與后面主語中的第一個名詞在數(shù)上一致。have一般表示某人有某物。句意：在過去幾年中，北京發(fā)生了許多變化。結合語境可知本句描述的是現(xiàn)在已經(jīng)完成的動作，本句主語many changes表達復數(shù)含義，故選D。
考點：there be句型的時態(tài)
點評：There be句型表示“某地(或某時)存在有某人(或某物)，而并非某地(某人、某物或某時)擁有什么東西”，其實質是倒裝句。其也有時態(tài)變化，要借助于不同的助動詞。但是當助動詞是be動詞時，一般可以省略，只用一個be動詞就行。

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