Without more context or specific examples, it is difficult to definitively say whether something is definitely correct German or definitely not correct German. German is a complex language with many rules and exceptions, so it is possible for something to be correct in one context but incorrect in another. It is always best to consult a native speaker or language expert for confirmation on the correctness of German language usage. **

It sounds like your friend may be imposing limitations on you and it's affecting your personal growth or freedom. It's important to have open and honest communication with your friend to understand their perspective and express your own feelings. It's also important to evaluate the impact of this restriction on your well-being and consider setting boundaries if necessary. Ultimately, it's important to prioritize your own happiness and growth in any relationship. **

Without more context, it's difficult to say definitively whether "that" is definitely 20. It would depend on what "that" refers to and the specific circumstances. If "that" is a number or quantity, it could be 20, but without more information, it's impossible to confirm. **

When celebrating their 16th birthday, one must definitely have had a birthday party with friends and family. It is also common to receive a special gift or present to mark the occasion. In some cultures, turning 16 may also signify certain rites of passage, such as getting a driver's license or being allowed to date. Overall, celebrating one's 16th birthday is a significant milestone that often involves some form of celebration or recognition. **

If you are looking for sad animes, you may want to consider watching "Clannad," "Your Lie in April," or "Grave of the Fireflies." These anime series are known for their emotional storylines and heartbreaking moments that are sure to evoke strong emotions. Be prepared for a rollercoaster of feelings as you delve into these heart-wrenching tales of love, loss, and resilience. **

Based on the content provided, it is difficult to determine definitively if this is spam or not. It would be helpful to provide more context or specific information to make a more accurate assessment. If you are unsure about the legitimacy of the message, it is always best to err on the side of caution and avoid interacting with suspicious or unsolicited communications. **

If you are looking for sad anime, there are many options to choose from. Some popular choices include "Clannad," "Your Lie in April," "Anohana: The Flower We Saw That Day," and "Grave of the Fireflies." These anime are known for their emotional storytelling and ability to evoke strong feelings of sadness and empathy in the audience. Whether you are looking for a heart-wrenching romance, a touching coming-of-age story, or a powerful historical drama, there are plenty of sad anime to explore. **

Attending lectures can be beneficial as it provides an opportunity to engage with the material in a structured way, ask questions, and interact with classmates. However, whether one should definitely attend lectures depends on individual learning styles and preferences. Some students may find that they can learn effectively through self-study or other resources, while others may benefit more from attending lectures. Ultimately, it is important for students to assess their own learning needs and preferences to determine if attending lectures is the best approach for them. **