20.Mr.Black is very happy because the clothes made in his factory have never been 　　　　.

A .popular　　　　 　B. more popular　　　 　　C. most popular　　　 D. the　 most popular

19.Excuse me, I 　　　　　　blocking your way.

A. didn’t　 realized 　　B. don’t　 realize　　 　　　C. haven’t realized　 　　D. wasn’t realizing