The inner connection for the entire area _____when there was a sudden power cut yesterday.
A．lostB．was lostC．had lostD．had been lost
B

試題分析：考查時態(tài)：句意：昨天突然停電，我們失去了網(wǎng)絡(luò)連接。lost 在這里做形容詞用，丟失了，那么前邊要有be動詞來構(gòu)成主系表的結(jié)構(gòu)，when引導的時間狀語從句是一般過去式，和主句的動作同時發(fā)生，所有前面要有was
點評：考查時態(tài)要抓住時間，這題有明顯的時間狀語：when there was a sudden power cut yesterday.所以很簡單，再就是結(jié)合上下文。
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