14. Erica heard _______ many children in the poor countries worked in a factory 12 hours a day.(A) w

問題詳情

14. Erica heard _______ many children in the poor countries worked in a factory 12 hours a day.
(A) which
(B) that
(C) who
(D) of

答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)