[ Adverb Clause ]
__________ the experiment yields consistent results, we can draw valid conclusions.
A. Unless
B. After
C. While
D. Because

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AbilityQuantifiers and AdjectivesFuture Tenses, Conditionals and ProfessionsAdverbial Clauses of Manner and ResultGerund NounArticles & PrepositionTenseAuxiliary Verbs, if, unless and ModalModals of DeductionAdverbs by TypeOther quiz:
Auxiliary Verbs › View___ it light up when you switch it on?
A. Does
B. Do
Grammar › View
I _______________ (LOVE) you, Susan.
A. love
B. am loving
Mai doesn’t like reading science books, and Hoa doesn’t __________.
A. so
B. too
C. either
D. neither
Grammar and Vocabulary › View
If people ______ on Mars, they _______ need a biosphere.
A. lived / would
B. will live / will
C. live / don’t