[ Vocabulary ]
parts of your body that work together to fight disease
A. immune system
B. infect
C. protect
D. symptom

Random Topics:
Take or PutArticlePresent Perfect SimpleModals and VocabularySentence Fragments and Complete SentencesRelative ClauseFirst ConditionalsGerunds/InfinitivesIndependent and Dependent ClausesPersonal PronounOther quiz:
Preposition on Time › ViewI swim ___ Mondays and Wednesdays.
A. at
B. on
C. in
D. X
Grammar › View
Which sentence below has a grammar mistake?
A. I like people who is kind and patient.
B. I have a friend whose mother can speak Russian.
C. Do you know whose idea it was?
D. This is the song which made me fall in love with Dua Lipa’s music.
Present Tenses › ViewAdam ………… a book about wild animals now.
A. reads
B. is reading
C. read
D. are reading
Grammar › View
______ bought a new computer.
A. We
B. Us
C. Ourselves