Mong mấy bạn giúp mình 2 bài này ( dưới đây là bài 1 vì mình ko chụp dc nên mới ghi lại còn đáp án nằm trong ảnh) giải cả 2 bài luôn nhaa 1. In 1953 , a Frenchman, De Valayer(1)________a postal system in Paris. He set up mail (2)_____And delivered any letters placed in them if they used envelopes(3)_____only he sold. (4)____enemy put live mice into the letter boxes and ruined De Valayer's bussiness.A schoolmate from England, Rowland Hill(5) ____the adhesive postage stamp in 1837, an act for which he was knighted. Throught his efforts the first stamp in the world was issued in England in 1840 hill created the first unifrom postage rates that were based on weight, rather than size.