Chọn từ viết sai và sửa lại

chọn từ viết sai và sửa lại (2)
56. Despite she was in her middle age, she looked very graceful and charming.

57. The workers went on strikes because of they thought their wages were low.   

58. Please arrive on time in order to we will be able to start the meeting punctually.

59. If it had  been for your careful instruction, I would have made a big mistake in the report.

60. Peter has been written the composition for 3 hours and he has not finished  yet.