My friend gave me a few medicinal heat patches and I put them on this morning. She asks if they're working. I say:<br/><br/>The patches are working. Or<br/><br/>The patches have been working.<br/><br/>And<br/><br/>I took the cab to school the first two weeks of the month, but have stopped because class is over. So when the driver was taking us on a loop. I say:<br/><br/>I've taken the cab to school for/in the past month, so I know what route we should've taken.. Or<br/><br/>I've been taking the cab to school in/for the past month, so I know what route we should've taken. OR<br/><br/>I was taking the cab to school last week, so I know what route we should've taken.<br/><br/>Are all three useable in this situation?<br/><br/>Thanks!