请用以下词组的正确形式填空: fall into; not amount to much; drift off; bond with; Just as it is easier to go downhill than to climb uphill, it is always easy to ___________ bad habits unless people have a very strong will.
主观题
请用以下词组的正确形式填空: fall into; not amount to much; drift off; bond with; Just as it is easier to go downhill than to climb uphill, it is always easy to ___________ bad habits unless people have a very strong will.