可是,随着演出的继续,笑声变得越来越少,直到完全消失。
A.
however, when the show is continued, the laughs became less and less , and then they disappeared completely.
B.
As the show continued, however, the laughs became fewer and fewer before they disappeared completely.
C.
Though the show continued, but the laughs became fewer and fewer before they disappeared completely.