[ Grammar ]
Brush your teeth ________ you go to bed.
A. before
B. when
C. since
D. unless

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Modals and Past TensesPresent and Past Perfect TensesVocabulary and TensesAction VerbConjunctive Adverbs and PunctuationPast Simple Negative & QuestionsGrammar - Punctuation of SentencesFirst & Second ConditionalContrastive ConjunctionConditional Sentences Type 0, 1 and 2Other quiz:
Past Tenses › Viewto talk about past repeated actions
A. used to/ would + V_inf
B. past continuous
Grammar › View
By 2021, the cure for COVID19 _______discovered.
A. will have been
B. will be being
Grammar › View_____ is the longest ruler among the three?
A. How
B. Who
C. Whom
D. Which
Transitional Phrases and Conjunctions › View
You can learn various instruments, …………… the guitar and the piano, if you practice daily.
A. On the other hand
B. However
C. While
D. Such as
