Practicing with Verb Tenses

What tense is this? What will you do when you finish your English classes? What tense is this? What were you doing last night at around 7 o’clock? What tense is this? What are you doing now? What tense is this? What had you done before you started classes in college? What tense is this? How long have you been studying English? What tense is this? ................
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