Single-Gap Challenges

Test your English skills with our interactive gap-fill challenges. Each series contains 10 targeted exercises to improve your vocabulary and grammar.

Planet Earth

10 exercisesChallenge #1

Eco-heroes

10 exercisesChallenge #2

Australian mammals

10 exercisesChallenge #3

Marine life

10 exercisesChallenge #4

South American mammals

10 exercisesChallenge #5

Our oceans

10 exercisesChallenge #6

Endangered birds

10 exercisesChallenge #7

Felines

10 exercisesChallenge #8

Trees

10 exercisesChallenge #9

Antarctic Fauna

10 exercisesChallenge #10

Arctic Fauna

10 exercisesChallenge #11

Amazing Insects

10 exercisesChallenge #12

Spiders

10 exercisesChallenge #13

10 exercisesChallenge #14