题文
It is not always easy for the public to see ________ use a new invention can be of to human life.
| A．whose | B．what |
| C．which | D．that |
推荐试卷
It is not always easy for the public to see ________ use a new invention can be of to human life.
| A．whose | B．what |
| C．which | D．that |
试题篮
()
粤公网安备 44130202000953号
