选择题:
1.People complain that decisions to approval or deny a permit are often ____rather than based on fixed criteria.
A. appropriate B. conscious C. arbitrary D. controversial
2. He didn't selfishly keep for himself the money inherited from his uncle. Instead, he made a ____contribution to help the community.
A. commercial B. generous C. comparable D. profitable
3. Mary worked here as a____ secretary and ended up getting a full-time job with the company.
A. pessimistic B. temporary C. previous D. cautious
4. Don,t defend him any more. It's obvious that he____destroyed the fence of the garden even without apology.
A. accidentally B. carelessly C. deliberately D. clumsily
请帮忙讲解一下,详细一点哦,谢谢!