Verb conjugation of "heighten" in English

Open the Word Program (press 'Start' button at the bottom left of screen, choose the menu 'Programs'. In the Word document, once a white new document has appeared, press 'edit menu' again and paste the contents.
How is the weather in Hamburg? We have 15 degrees and some sunshine here in the south. I have some remarks on your mail. If you write again and if you wish, I can correct your spelling mistakes.
I teach at the university of natural sciences. I have studied at the ETH in Zurich. At that time I started learning Spanish and I found Vocabulix. Since then I'm using it regularly with joy.