[ Modal Auxiliary ]
Mark __________ride a bike when he was three years old.
A. could
B. might
C. can

Random Topics:
Comparative & Superlative AdverbsFirst & Second ConditionalGrammar - Place and MovementRegular and Irregular VerbsTOEFLArticles and NounsPresent ContinuousSentences and Non SentencesConditional Sentence Type 0-3Subordination ConjunctionsOther quiz:
Grammar - Verb Forms › ViewWhere are you? Sam and I ___________________ in the café for over an hour!
A. had been sitting
B. had sat
C. have been sitting
D. have sat
Grammar › View
You may write _____ a pen or _____ a pencil.
A. with / by
B. with / with
C. in / in
D. by / by
