[ 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:
Present Tenses › ViewJane isn’t here yet. I (wait) _________________ since noon but there is no sign of her.
A. have waited
B. have been waiting
C. will have been waiting
D. had been waiting
Modal Verbs › View
PERFECT MODALS. She didn’t attend the meeting. She ___________ informed us.
A. should have
B. must have
C. could have
D. might have
Grammar › ViewAli 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
