問題詳情

26. The teacher has told the students _______________ the machine in the lab before knowing how to use it.
(A) don’t touch
(B) not to touch
(C) mustn’t touch
(D) not touching

參考答案

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