3. Students _______ the self-balancing scooters on all walkways, pathways, pedestrian ramps, patios, stairs and any gathering areas with foot traffic only.
(A) are prohibited using
(B) are prohibited from using
(C) prohibited from being using
(D) are prohibited from being used

答案:登入後查看
統計: A(1), B(1), C(0), D(0), E(0) #2622311