首字母填空 谁知道？

Please take care when driving a car so you can arrive sa_____.

Mother was pr_____dinner  when i returned from school.

1.safely

2.preparing

Please take care when driving a car so you can arrive safely.

请小心驾驶，你才能安全到达。

Mother was preparing dinner  when i returned from school.

 我放学回到家时妈妈正在准备晚餐。

1, safely,小心驾驶才能安全到达；

2,preparing. 我放学回家时妈妈正在准备晚饭。