【題目】Look!They about the solution to the network problems again.

A. argueB. are arguingC. arguedD. were arguing

【答案】B

【解析】

句意：看，他們又在討論解決網(wǎng)絡(luò)問題的辦法。

A. argue爭吵；原形；B. are arguing正在爭吵，現(xiàn)在進行時；C. argued爭吵，過去式；D. were arguing爭吵，過去進行時。根據(jù)Look!可知下文是現(xiàn)在進行時，其結(jié)構(gòu)是is/are doing的形式，主語是they，be動詞用are。根據(jù)題意，故選B。

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