题文
If there ______ no water or air on the earth, all living things would die.
| A．is | B．were | C．are | D．will be |
推荐试卷
If there ______ no water or air on the earth, all living things would die.
| A．is | B．were | C．are | D．will be |
试题篮
()
粤公网安备 44130202000953号
