It is not surprising if in these conditions people behave aggressively towards each other；it is impossible for them to behave（）

I thought things would get better, but（）it is they are ...

单项选择题I thought things would get better, but（）it is they are getting worse.

The encouragement of competition in all possible fields...

单项选择题The encouragement of competition in all possible fields should tend to（）the likelihood of war rather than increase it.

I began（）through the pages of a gardening catalogue.A.t...

单项选择题I began（）through the pages of a gardening catalogue.