【題目】Chatting online can be _____fun, but kids must be sure they stay safe on _____web.

A. 不填; the B. a; the

C. 不填; a D. a; a

【答案】A

【解析】

考查冠詞。句意：網(wǎng)上聊天可能很有趣，但是必須確保孩子們在網(wǎng)上安全。第一個空fun是形容詞，用作be動詞后的表語，不用冠詞；on the web是固定短語，意思是在互聯(lián)網(wǎng)上，所以第二個空填定冠詞the，故選A。

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