Neil Armstrong is an important person in American _____________________ because he was the first to walk on the moon.

• model

• history

We have to _____________________ all our relatives on the guest list.

• include

• describe

Louis Braille was the first to _____________________ an alphabet that helps blind people read with their fingers.

• invent

• float

Could you _____________________ what you were wearing for your graduation party?

• include

• describe

My mom worked hard to become a professional chef. She had to _____________________ her training by cooking for us.

• begin

• include

For their group project, students produced a _____________________ of a simple robot.

• engine

• model

We faced a technical issue, so we contacted a technical support _____________________.

• machine

• engineer

During the summer, my friends decided to _____________________ for many hours in the water.

• float

• describe

I could not use the printing _____________________ because it had run out of ink.

• engine

• machine

Some people believe that Toyota makes the most reliable car _____________________.

• engine

• machine