Experts warn that global warming will cause climate changes, including more ______ floods, heat waves and droughts. 
#18221
A
frequent
B
usual
C
ordinary
D
common
推荐题目
As I became older, I came to like ____ things.
#20452
A
more and more simple  
B
more simpler and simpler
C
much simpler ans simpleer
D
more and more simpler