He / suffer / rare tropical disease / which / contracted / while / AfricaĐoạn văn23/33He / suffer / rare tropical disease / which / contracted / while / AfricaHe still suffers from a rare tropical disease which contracted while he was in Africa.He still suffers from a rare tropical disease which he contracted while he was in Africa.He suffers from a rare tropical disease which he contracts while in Africa.He suffers from a rare tropical disease which was contracted while he is in Africa.Giải thíchĐáp án B