Large quantities of natural resources ________ in 100 years or so.
A.will use up | B.have been used up |
C.will be used up | D.had been used up |
相关知识点
推荐试卷
Large quantities of natural resources ________ in 100 years or so.
A.will use up | B.have been used up |
C.will be used up | D.had been used up |
试题篮
()