[ Present Perfect ]
Mary has worked as a doctor _____ 12 months.
A. since
B. for
Select your answer:

Random Topics:
Past Perfect & Past SimpleIntermediate GrammarCausative VerbsConditional Sentences Type 1Subject and Verb AgreementPossessive Pronouns and QuantifiersGerundClauses of ReasonVerbs and Possessive AdjectiveVerb Usage and GrammarOther quiz:
Vocabulary › Viewuncontrollably emotional
A. hysterical
B. hystriacal
C. histyrical
D. hystierical
Grammar › View
Wiwi’s been a vegetarian _____ three years.
A. since
B. for
C. after
