8．Visit the old man this afternoon？If you______，make sure you wear sunscreens to protect your skin．（　�。�
A．canB．mustC．mayD．shall

分析 今天下午去拜訪那位老人嗎？如果你必須去的話，請確保涂防曬霜來保護你的皮膚．

解答 答案是B．考查情態(tài)動詞．can 能，會；must 必須；may 也許；shall 將要．句意是：今天下午去拜訪那位老人嗎？如果你必須去的話，請確保涂防曬霜來保護你的皮膚．故選B．

點評 解答此類題目，首先要掌握情態(tài)動詞的用法，然后根據(jù)語境選擇正確的答案．

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