求英语强人~Directions:Fill in the blanks in the following sentences with an appropria

问题描述:

求英语强人~Directions:Fill in the blanks in the following sentences with an appropria
2.I have given __ so much of my time to this job that I won't stop now.
3.They found that rust had eaten__ at the metal structure.
4.The police have sent out a detailed description___ the missing woman.

= =你忘了写最最关键的preposition
应该是分别是out, up, of