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

Random Topics:
Grammar - to beConditional Sentences and AdverbsWish SentencesSimple present/ past/ future tenseReflexive pronounsDescribing WordsConditionals and WishesPronounsConjunctions - Conjunctive AdverbsPrepositionOther quiz:
Vocabulary and Grammar › ViewComputers offer a much greater degree of __________ in the way work can be organised
A. flexible
B. flexibility
C. flexibly
D. inflexible
Grammar › View
Phil has been studied English for the last five years.
A. True
B. False
Ali is not feeling well, ——- he is not coming today.
A. so
B. but
C. and
D. or
Modal Verbs › View
She … have medical exams before her application is validated.
A. might
B. must
C. may
