当前位置: X题卡 > 所有题目 > 题目详情

In the past, man did not have to think about protection of the environment. There were very few peo...

查看本题答案

你可能感兴趣的试题

because wind and rain changed the weather  the drop in the temperature would have effects on wind and rain  because wind and rain did not change the weather  the drop in the temperature would not have effects on wind and rain  
did    do    had done    have done  
because wind and rain changed the weather  the drop in the temperature would have effects on wind and rain  because wind and rain did not change the weather  the drop in the temperature would not have effects on wind and rain  
they didn’t quarrel    they have quarreled    did they quarrel    have they quarreled  
did    do    have been doing    had done  
which bus did he take   which bus would he take   which bus he should take   which bus did he have to take  
did many years pass   many years past   many years had passed   many years have passed  
enough    too    so    such  
because wind and rain changed the weather  the drop in the temperature would have effects on wind and rain  because wind and rain did not change the weather  the drop in the temperature would not have effects on wind and rain  
did    do    had done    have been doing  
because wind and rain changed the weather  , which would have effects on wind and rain  because wind and rain did not change the weather  , which would not have effects on wind and rain  
doing    did    have    do  
have ; known; have known    did; know; knew   did; know; have known    have; known; knew  
got    won    made    did  
did he; Yes    didn’t he; No    didn’t he; Yes    did he; No  
because wind and rain changed the weather  the drop in the temperature would have effects on wind and rain  because wind and rain did not change the weather  the drop in the temperature would not have effects on wind and rain  
did    do    had done    have been doing  
did    do    have been doing    had done  
did    do    have been doing    had done  
have been doing   did   do   had done  

热门试题

更多