use the present perfect to describe an action that began in the past continues to now. use for to specify the amount of time. use sine to specify the starting point.
use the present perfect to describe an action that began in the past continues to now. use for to specify the amount of time. use sine to specify the starting point.Invalid.
use the present perfect to describe an action that began in the past continues to now. use for to specify the amount of time. use sine to specify the starting point. Correct.
Use the present perfect to describe an action that began in the past continues to now. Use for to specify the amount of. Time. Use sine to specify the starting point.