.We have got a heavy snow there in my hometown this winter, which is a sign that this year _____ to be another good one for harvests.
77. Oh, sorry. A lighted cigarette burned a hole _____ my coat, and I have to change another one.
76. He cut the apple ________, and gave the big to his little sister.
75. Taiji boxing is good _____ health, so the old man began to practise it ten years ago and now he is good _____ it.
74. We went _____ our plan carefully before we carried it out.
73. It is not right _____ a person who is _____ trouble.