Before the problem can be solved，it must be obvious ________ the problem itself is.(2011·湖南，31)
| A．what | B．that | C．which | D．why |
相关知识点
推荐试卷
Before the problem can be solved，it must be obvious ________ the problem itself is.(2011·湖南，31)
| A．what | B．that | C．which | D．why |
试题篮
()
粤公网安备 44130202000953号
