单选题 3.  He's been blowing hot and cold about the trip to Holland ever since I first suggested it. The italicized phrase means ______.
【正确答案】 B
【答案解析】 blow hot and cold about意为“(对……)反复无常，摇摆不定，打不定主意”，如：He blows hot and cold about geeing married.他对结婚犹豫不决。