题目内容
Fill in the following four sentences with “ habit, practice; custom ”.
1.The incident between the two nations has been settled according to the international ______________.
2. He has a ___________ of biting his lips when he is puzzled.
3. Eating hot dogs is an American ____________.
4. It is a regular __________ for a shop to open at 8:00 in the morning in this area.
1. practice
2. habit
3. custom
4. practice
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