It is no longer a question now _____ man can land on the moon.
| A．that | B．if | C．whether | D．what |
相关知识点
推荐试卷
It is no longer a question now _____ man can land on the moon.
| A．that | B．if | C．whether | D．what |
试题篮
()
粤公网安备 44130202000953号
