[ Past Tenses ]
When I started playing the guitar, John ………. it for 10 years.
A. had already been playing
B. was already playing

Random Topics:
Word Form & Verb TenseSubject and Verbs AgreementSome & AnyFirst & Second ConditionalFirst Conditional, Future Time ClausesModals and VocabularyIrregular Plural NounsIN, ON & ATGrammar (either..or.. and neither..nor..)Phrasal Verbs and Verb FormsOther quiz:
Modals › ViewYou ____ come to the party if you want to.
A. can
B. should
C. might
D. would
Grammar › View
I ……………………. my car when it ……………………. to rain.
A. was driving / started
B. drove / was starting
C. drove / started
D. was driving / was starting
General Quiz › ViewHe is _______ engineer.
A. a
B. an
Past Modals › View
I haven’t got my wallet. I ____ left it at home.
A. should have
B. must have