---- Why does the river smell terrible? ---- Because large quantities of water_

题干

---- Why does the river smell terrible?
---- Because large quantities of water______．

A．have been polluted

B．has polluted

C．has been polluted

D．have polluted

上一题下一题 0.64难度单项选择更新时间:2014-02-15 02:32:32

小学学科试题库

初中学科试题库

高中学科试题库