We understand _______small changes to our land can have a big impact upon our environment __________ as we know is vulnerable enough.
#68445
A
what; which
B
what; where
C
how; where
D
how; which
推荐题目
__ was once regarded as impossible has come true.
#73630
A
Who
B
Which
C
That
D
What
___ , he still put people’s life in the first place.    
#68314
A
However he was tired
B
Now matter he was tired
C
Now matter how was he tired
D
However tired he was
_______ she is, she has not much inside.
#67704
A
Intelligent girl as
B
An intelligent girl as
C
Intelligent a girl as
D
Girl intelligent as