题干
These days he has made _____ in his studies by working hard.
A：many progre
B：a lot of progresse
C：much progre
D：many a progre
答案(点此获取答案解析）
C
A：many progre
B：a lot of progresse
C：much progre
D：many a progre
的水平放置直观图是边长为
正方形，则平行四边形