单选题 --I'm really thirsty. Do you think this water is safe ______? --Ask the farmer over there.
【正确答案】 A
【答案解析】[精解] 本题考查动词不定式。电于drink前有主语this water,所以后面不用it。这里用动词不定式的主动形式表示被动,所以本题的正确答案选A。 [拓展] 形容词后接不定式作状语时,常用主动形式表被动意义。此类形容词有easy, hard, difficult, cheap, expensive, fit, nice, good, funny, exciting, light, heavy, dangerous, comfortable, delicious等。动词是不及物动词时要加相应的介词。例:The stone is comfortable to sit on.这块石头坐起来很舒服。