[ Grammar ]
What is the main purpose of our immune system?
A. To help us move
B. To help us breathe
C. To help protect us from bacteria and viruses
D. To help our hair grow

Random Topics:
Infinitives and GerundsConjunctions and PrepositionsModalsTimeSome & AnySynonyms and VocabularyComparison of Adjectives and AdverbsTOEICPast Perfect Simple TenseAdjectives, ING - EDOther quiz:
Some vs. Any › ViewWhy on earth doesn’t …………. want to come with me?
· a. anybody
· b.somebody
Grammar › View
The teacher said: Don’t forget to do your homework!
The teacher asked them __________ to do their homework.
A. not to forget
B. to not forget
C. to forget
Vocabulary › ViewEarthquake waves travel slowly through the hotter parts of the ______ and speed up in colder, denser areas.
A. kinetics
B. mantle
C. lipids
D. latitude
Grammar › View
You’ve … it in pencil.
A. wrote
B. writen
C. written
D. writed