1) Use the present perfect to talk about an action that happened in the past when the exact time isn't known or important a) True b) False 2) Use the past tense when the exact time is given a) True b) False 3) "Ago" is used with: a) present perfect  b) Simple past  4) "Since" is used with: a) present perfect b) Simple past 5) in "Requests" Could is more formal than Can a) True b) False 6) Use "Could" to express ability in the past a) True b) False

Form, Meaning and Function

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