-----John, come over and enjoy my new car! It isn’t fashionable, isn’t it? ------ Wonderful! If only I_______one, too. A. had B. have C. have had D. will have 答案:A 解析: If only意思为 “但愿……;要是……就好了”,可以单独使用,表示与事实相反或不可实现的愿望。根据语境可知,这是与现在事实相反的愿望,要用一般过去时或系动词were,故答案为A。张叔叔买3包茶叶,每包x元,他付出a元,找回的钱数用式子表示是( ),当x=30,a=100时,找回( )元。