With the rise of modern communication tools, handwritten letters ______ by emails. 

A．will replace B．have replacedC．a(chǎn)re replacedD．a(chǎn)re being replaced

D

解析試題分析：考查時態(tài)：句意：隨著現(xiàn)代通訊工具的增加，手寫信正被電子郵件代替。handwritten letters和replace是被動關系，而且這個動作是現(xiàn)在正在發(fā)生。用現(xiàn)在進行時的被動式。選D。
考點：考查時態(tài)語態(tài)
點評：英語中的時態(tài)主要由動詞的形式?jīng)Q定，因此在學習英語時態(tài)時，要注意分析動詞形式及具體語境，想象在那個特定的時間動作所發(fā)生的背景，這個動作是經(jīng)常性動作、一般性動作、進行性動作、完成性動作還是將要發(fā)生的動作�？疾闀r態(tài)的時候別忘了語態(tài)問題。

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