Frequently, they would ____(打瞌睡).
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Many factors must be ____(考虑在内): the children's personality and maturity, the amount of time the children will be alone, the safety of the neighborhood, accessibility of help in case of an emergency.
They suppress their guilt since they believe that their work will benefit everyone ____(从长远来看).
These children ____(看待) their free time after school as an opportunity for personal development.
____(每天) they return from school and unlock the door to their home with the key hanging around their necks.