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The stranger knocked _____ the door.

Aat

Bto

Con

Dby

Answer:

A. at

Read Explanation:

Knocked നു ശേഷം ഉപയോഗിക്കുന്ന preposition 'at' ആണ്. Eg : Someone knocked at the door. (വാതിലിൽ ആരോ മുട്ടി.)


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