Topics: Adverb and Sentence Structure
“We must not wait ___ we have killed off all marine life.”
A. until
B. before
C. as soon as
D. when
Select your answer:

Random Topics:
Tenses and StructurePronouns ( Interrogative )Relative Pronouns and AdverbsPast and Past ContinuousGrammar, Literature, and VocabularyHelping and Linking VerbsInfinitive GerundUnless If First ConditionalDependent PrepositionsModalsOther quiz:
Grammar › ViewHow …sugar do we need?
A. a lot of
B. many
C. much
D. lots of
Comparatives and Conjunctions › View
He plays soccer every weekend, __________ he’s not very good at it.
A. so
B. and
C. but
