[ Present Perfect Tense ]
Which one is correct ?
A. We have studied for 3 months
B. We have studied since 3 months

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Present Simple vs Past SimpleAuxiliary Verbs, if, unless and ModalCoordinating Conjunctions and Comparative AdjectivesQuestion TagsContinuous TensePresent Simple and Continuous TensePresent, Past, and Future TimeWill vs Verb InfinitivesUnscramble SentencePast and Present ContinuousOther quiz:
Coordinating Conjunction › ViewDo you want to go to the zoo ; want to go to park ?
A. And
B. Or
C. Yet
D. For
Tenses › View
Andrea … maths.
A. isn’t like
B. don’t like
C. doesn’t like
D. won’t like