填空题 We know it's easy to say, but you'll soon start to see and feel the benefits of dieting. Keep 1 it and you will succeed.
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【正确答案】 1、at    
【答案解析】[译文] 我们知道说起来容易，不过你很快就会看到并感受到节食带来的好处。坚持下去，你会成功。