适当形式填空1.yester six people were hurt,but no _____(life) were

适当形式填空1.yester six people were hurt,but no _____(life) were lost in the car accident.
2.To study hard ____(be) important.
3.On June 1st,parents usually spend some money in ____(buy) picture books for their children as presents.
4.He asked us ____(wear) old clothes to school the next day.