[ Grammar ]
Tears contain an antiseptic ………… helps protect our eyes from infection.
A. how
B. where
C. that

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Vocabulary and IdiomsAdverb & Compound SentencesConjunctive AdverbArticlesConditional Sentences Type 0, 1 and 2Modals for Necessity and SuggestionsNouns - Word Form-IONVerb and PrepositionPrepositions and AdverbsFood VocabularyOther quiz:
Vocabulary › ViewBe careful not to __________ your clothes on the floor.
A. throw
B. visit
C. guess
D. flag
Conjunctions › View
…….. will they paint the outside of the house ……. they will also paint inside.
A. Both … and ….
B. Not only ….. but …..
C. Neither ….. nor …..
D. either …… or …..
Past Simple, Present Perfect Tense › ViewIn 2016, we (not/join) _________ the tennis competition in our town.
A. has not joined
B. have not joined
C. did not joined
D. did not join
E. have not join
Subject and Verb Agreement › View
The 4 stroke engine cycle ________ also called the Otto Cycle.
A. is
B. are
