Topics: Adverb Clauses
Identify the subordinate clause in the sentence:
You must do the grammar lesson unless you have already mastered it.
A. unless
B. do
C. mastered
D. lesson
Select your answer:

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Modal Verb in Passive VoiceSimple Past TensesComparative and SuperlativesVOCAB & GRAMMARSimple Past Irregular & NegativeTypes of PrepositionGerund, Infinitive & ModalsPresent Perfect: for/sinceVerb Tenses and Sentence StructureTake or PutOther quiz:
Homophones › ViewMr. Donald would rather think of his future ____ think of ____ affected his _____.
A. Then, who’s, passed
B. Than, who’s, passed
C. Then, whose, past
D. Then, who’s, past
E. Than, whose, past
Passive Voice with Modals › View
The injured man ___ to the hospital immediately.
A. must be taken
B. must take
C. must have taken
