1 .I have ever join in the least enjoyable trip (Cụm danh từ the + adj+N)
2. It takes a long time to get over from such a desease (recover=get over:Vượt qua)
3 I have ever seen the most terrible accident (Giống CT câu 1)
4 Da Nang is more peaceful than many other big cities(So sánh hơn)
5 . If they go on play such a dangerous game , you will have an accdient (continue=go on:tiếp tục)