With its long history, astounding natural beauty and the open (30) _________ of the people here, the experience of visiting Halong is unforgettable.Đoạn văn30/40Read the following passage and circle the letter A, B, C or D to indicate the correct word With its long history, astounding natural beauty and the open (30) _________ of the people here, the experience of visiting Halong is unforgettable.diversityhospitalityhostilitypopularityGiải thíchB. hospitality