[ 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

Random Topics:
Present Perfect or Past SimpleSpeech TensesDependent PrepositionsTenses and StructureGrammar - direct/indirect objectsVocabulary & GrammarModals for RecommendationsBe going to / WillTime ClauseOrdering AdjectivesOther quiz:
Conjunctions › ViewHe left the meeting early ___ he had another appointment.
A. because
B. in order to
C. so that
D. so
Grammar › View
Are your parents hard-working?
A. Yes, they are
B. No, they can’t
C. Yes, they do
Grammar › ViewDo you know anyone _______ could help me improve my maths skills?
A. that
B. who
C. when
Vocabulary and Grammar › View
I haven’t had an accident yet but I’ve had a number of _________shaves.
A. narrow
B. near
C. close
D. tiny
