Office2 lets you choose whether or not text is wrapped within a cell or a merged cell.
To wrap text, select the appropriate cell or merged cell and press the Settings button located in the toolbar and select the Align button in the tab bar at the bottom of the screen.
Turn on the Wrap Text switch and press the Save button. You can adjust the alignment of the wrapped text by choosing the appropriate horizontal and vertical alignments from the controls above. To turn off wrapping of text in a cell, select it and open the Align settings and turn off the Wrap Text switch and press the Save button.