47.Hoa was happy since she got a good mark
48, Hoa failed her English test; therefore, she had to do her test again
49. I got wet because I forgot my raincoat

46. Đứng đầu câu
47. giữa câu
48. giữa câu
49. giữa câu
50. giữa câu

46. Although Mrs.Thoa was tired, she helped me with my homework
47. Hoa was happy since she got a good mark.
48. Ha failed her English test therefore she had to do her test again.
49. I got wet because I forgot my raincoat.
50.  It's raining hard so we can't go out