[ Present Perfect Continuous ]
they / learn English for two years
A. they learn English for two years
B. they has been English for two years
C. They have been learning English for two years

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Vocabulary & Grammar › ViewThe first book _____ in what year?
A. is published
B. was published
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Tenses › View
Which tense is used to describe an action that was recently completed and has relevance to the present?
A. Present Perfect
B. Past Perfect
C. Future Perfect
D. Past Continuous