【題組】29. (A) for two blocks (B) on two blocks (C) in two blocks (D) to two blocks

問題詳情

【題組】29.
(A) for two blocks
(B) on two blocks
(C) in two blocks
(D) to two blocks

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