As a teacher, I seldom give my students so difficult a problem ________ they can not work out.
| A．that | B．if | C．in order that | D．as |
推荐试卷
As a teacher, I seldom give my students so difficult a problem ________ they can not work out.
| A．that | B．if | C．in order that | D．as |
试题篮
()
粤公网安备 44130202000953号
