How would you say the following please?<br/><br/>Let's say you are folding bed sheets. <br/><br/>Themanager says:<br/><br/>"Fold the bed sheets exactly in the middle/in half/in 2 so that the corners are perfectly aligned.<br/><br/>Now can you say<br/><br/>- Fold the sheet in 4/in quarters.<br/><br/>- Fold the sheet of paper in 3 so that it could fit the the envelop.<br/><br/>Thank you