you help me with my homework, please?, A) May, B) Can, C) Could, Students ____ use calculators during the test., A) may, B) can, C) could, My sister ____ play tennis very well now, A) can, B) could, C) may, Can is used for ability in the present, True, False, May is used for polite requests only, treu, false, Could can describe past ability., treu, false

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