_____entering the classroom, remember to take your seat and turn off your cell phone.
| A．At | B．From | C．Upon | D．As |
相关知识点
推荐试卷
_____entering the classroom, remember to take your seat and turn off your cell phone.
| A．At | B．From | C．Upon | D．As |
试题篮
()
粤公网安备 44130202000953号
