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“My son decided to go into business on a shoestring(鞋带;一小笔钱),”said Sally,“He has tripled(使增至三倍)his money,but he’s still not satisfied.Can you believe it?”“Why not?”asked her friend Lawrence.“He can’t think of anything to do with three shoestrings.”
“My son decided to go into business on a shoestring ” said Sally, “He has tripled (make tripled) his money, but he’s still not satisfied.Can you believe it? ”“ Why not? ”asked her friend Lawrence. “ He can not think of anything to do with three shoestrings. ”