1. Describes an ability that someone had in the past. Ex : I could swim when I was young. / You could...

Accept is always used as a verb, primarily meaning to agree to take something (like a job or gift).Example...

1. Used to express ability (to be able to do something). Example :I can make jewelry. / He can’t speak...

You are asking someone in present tense if they object to something you are asking.Examples:"Do you mind...

When using the words 'I'm calling' you are stating that you are actually using the phone to call and...