I use the present perfect simple or present perfect continuous when…
A. I talk about an action that started in the past and finished in the past
B. I talk about an action that started in the present and finishes in the future
C. I talk about an action that started in the past and continues to the present

Random Topics:
Possessive Pronouns and Adjective PronounsModals for DeductionAdverb Clauses of TimeSimple Present Tense with Adverb of FrequencyGrammar-Present Continuous-Sentence MakingSimple Past TenseCoordinating ConjunctionsAdverbs and AdjectivesSuperlative AdjectivesVerb ConjugationOther quiz:
Prepositions › ViewDid you do that _______ purpose?
A. in
B. on
C. by
Grammar › View
A, an, the- Tiny ________ _____ that mark nouns and answer the question: Which?
A. adverbs
B. nouns
C. Verbs
D. article adjectives
Active vs. Passive Voice › ViewCan cigarettes be smoked in the patio of the restaurant?
A. This sentence is “Active.”
B. This sentence is “Passive.”
First Conditional › View
If you …. how to cook, …… dinner for me?
A. won´t learn / will you prepare
B. learnt / will you prepare
C. learns / will you prepare
D. learn / will you prepare