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

Random Topics:
AbilityQuantifiers and AdjectivesFuture Tenses, Conditionals and ProfessionsAdverbial Clauses of Manner and ResultGerund NounArticles & PrepositionTenseAuxiliary Verbs, if, unless and ModalModals of DeductionAdverbs by TypeOther quiz:
Continuous Tense › ViewThe man ….. a motorcycle with wearing helmet.
A. rode
B. ride
C. is riding
D. are riding
Gerund & To Infinitive › View
In her letter my friend said that she was looking forward _____ from me again.
A. to hearing
B. hearing
C. to hear
D. to being heard
So - Too - Either - Neither › ViewMai 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