About Us
Courses
Practice English
- Exercises
- Explore & Play
Contact Us

Search
- -Ing Form
- -s Form
- Am
- Aspects
- Auxiliary Verbs
- Base Form
- Continuous
- Do
- Does
- Future Perfect
- Games
- Grammar Exercises
- Guess Game
- Has
- Have
- Is
- Main Verbs
- Negative Sentences
- Past Participle Form
- Perfect
- Personality Test
- Present
- Present perfect
- Present Simple
- Primary Auxiliary Verbs
- Progressive
- Questions
- Simple
- Uncategorized
- Verb Forms
- Verbs

Guess game 17

Guess the world's wonder 5

I am one of the world's largest hydroelectric power plants, built on the Paraná River. I lie on the border between Brazil and Paraguay. My enormous structure generates electricity by harnessing the power of the river.

Previous Start Quiz Next

Time's up

At Room One, we believe that no two students learn in the same way. That’s why every course is personalized to your goals, interests, and pace of learning. Through original materials and practical lessons, we help you build the confidence to use English in real-life situations.