"I am able to swim."
a) I can swim.
b) I could swim.
a) I can swim.
When do we use 'could'?
a) To talk about ability in the past
b) To talk about ability in the present
c) To talk about ability in the past and conditionally
c) To talk about ability in the past and conditionally
What is the infinitive of 'can'?
a) To can
b) To be able to
c) To could
b) To be able to
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