Many students are ________ chatting online, which wastes them plenty of time.
A．crazy aboutB．connected withC．worried about D．a(chǎn)nxious about
A

試題分析：句意：許多學(xué)生對網(wǎng)聊很瘋狂，那浪費了他們大量的時間。Be crazy about對……對……很瘋狂 be connected with與……連接 be worried about對……擔(dān)心 be anxious about擔(dān)憂，選A。
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