[ Grammar, Conditional Sentences, Vocabulary ]
He ________ the jewels unless he had had inside help.
A. could not have stolen
B. could have stolen
C. has stolen
D. will not have stolen

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Conjunctions and CommasNoun, Quantifiers and SuffixesVerb PhrasesAdverb of Frequency and Past Continuous TensePreposition (at,in,on)Present Simple with Adverbs of FrequencyGrammar : can, could and be able toVerb FormsNoun QuantifiersPlaces in TownOther quiz:
Present Simple and Present Continuous Tense › ViewSorry, Lisa _____ not here at the moment.
a. are
b. am
c. is
d. be
Adverbs, Infinitives, Definite Article › View
John worked____________ and won the competition.
A. hard
B. hardly
