句型转换。在横线上填入适当的词，使上下两个句子的意思相同。
1. The school looks after the health and happiness of its students.
The school looks after the _____ of its students.
2. After the accident, her parents took good care of her until she was better.
After the accident, her parents _____ her until she was better.
3. She gave birth to a baby boy this morning.
She _____ a baby boy this morning.
4. She watched attentively her child's behaviour.
She _____ her child's behaviour.
5. The hard work was useful enough because I passed the exam.
The hard work was _____ because I passed the exam.