[ Grammar ]
Grammar:
Nobody knows what happened. The fire ____ been an accident or caused on purpose.
_____
A. could have
B. must have
C. should have
Select your answer:

Random Topics:
Modals - Reported Speech - ConditionalsGrammar - Punctuation of SentencesNoun Verb AgreementGrammar ElementaryModal Verbs in First ConditionalGrammar: SyntaxPrepositions and ConjunctionsSuperlative AdjectivesAdverbs and Time ExpressionsSimple Present vs Present ProgresiveOther quiz:
Present Continuous Tense › ViewThe children ____ with their toys right now.
A. are playing
B. play
C. plays
D. is playing
Grammar › View
Identify the correct language function
‘May I take your pen?’
A. request
B. order
C. willingness
D. permission
