Verb conjugation of "exhibit" in English

Vivi, Sabina and I wanted to thank you very much for Sabina's gift! Thank you for the cool outfits that she is now wearing, all little boys are waiting in line lately. I wish you much happiness.
Productivity declines when it is too hot outside. Oscar therefore closed his laptop and production unit and headed towards the lake where his pretty girlfriend was waiting for him. Once he arrived he bought a ice cream as a surprise.
Today I have a lot of time because I've just returned from a 3 day vacation. For how long have you been teaching German? For about 3 years I have been studying Spanish mostly alone, with books and stuff.