During World WarⅡ, Japan attacked Pearl Harbor without declaring war _____ America.
I’ve already forgotten ___________ you put the dictionary.
The majority of the people in favour of the plan. However, I the plan on the grounds that it is too expensive.
Every possible means _______to prevent the air pollution, but the sky is still not clear.
Your composition is _________to your brother’s.
The suggestion they all objected to________to be effective finally.