Yes you can use megalomania in a sentence. His megalomania prevents him from recognizing his faults or appreciating the talents of others.
'Would you like this candy or these desserts to follow the meal?'This is being used as an indicator for a singular item, and these is being used as an indicator for multiple items.See the related...
I have decided to clean out my garage next week. - as a verb we are having a clean out at home on the weekend. - as a noun
Example sentence - I heated the water in the kettle to make tea.
When I prepare to write a speech, the idea summary will be found in the topic sentence.