The thought ______he might be a scientist some day encouraged him to study hard

Amy usually ________ from school, but today she goes home by bike.

下列各组词语中加点字的注音都正确的一项是（　　）

After the trainer was sure that the whale could look after itself, he _____ it into the sea.

This school was _____ in 1950 and has a history of nearly sixty years.[ ]