[ Tenses ]
Past simple, past perfect simple or past perfect continuous.
Before I ___ (have) the opportunity to book tickets for the concert, they ___ (all sell) out.
A. had / had all sold
B. had had / had been all selling
C. had been having / sold

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Clauses of ReasonAdjective ClausesPreposition of PlacePresent Perfect TenseIrregular Plural NounsPhrasal Verb and ModalSimple Tenses in EnglishParticiple - ing/ edGrammar Pronoun and Singular Plural NounPresent Continuous for FutureOther quiz:
Adjective Clauses › ViewWhy does he always wear clothes _____ are too big for him?
A. whose
B. whom
C. which
D. who
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Your mother ______ your phone for one hour.
A. used
B. is using
C. will use
D. has used