帮忙解释下两道英语题
1. The dictionart has been _____ to us.
A. of great help B. of very helpful
C. of quite helpfulD. of helpful
2. The room is so dirty .I have to ____ at home for hours to do some cleaning , or everything will ____ as it is now.
A. stay;be remained B. remain; be remained
C. stay; be stayed D. remain;remain