高一英语选择题2题,急求答案,并请说明理由~~~

题目

高一英语选择题2题,急求答案,并请说明理由~~~
4. We've made arrangements for the car-------for you outside your house.
A to wait B waiting C wait D to be waited
5. I was in charge of the job--------at that time.
A being done B having been done C done D to be done

答案

4:A
TO DO STH表示目的是.比如mother cooked the noodles for me TO BRING TO SCHOOL.
5:D
我负责这件工作,目的是to be done at that time.