She invited us to the party.

I decided to invite my friends to my house.

He adopted a strategy of waiting for easy pitches.

Arithmetic operators play an important role in programming.

He is good at arithmetic operations.

He is good at arithmetic.

The ferry is crossing the river.

He is playing the role of building bridges between the two countries.

We are planning to build a bridge over this river.

He is good at solving arithmetic problems.