Please tell me the way to solve this problem.

We are considering introducing a new voting system.

Learning a new input method is difficult.

The police used a water cannon against the demonstrators.

Mr. Shimabukuro is my best friend.

The black house spider has made a web in the corner of the house.

I use this pastry bag to squeeze cream onto the cake.

Fish use their swim bladder to float or sink in the water.

He does nothing like a good-for-nothing.

He confessed to committing the seven deadly sins.