1. Is this any way to welcome a relative? [Indicating slight discontent/anger] এভাবে কি কখনো আত্মীয়কে স্বাগত জানায়? (Sorry if I misunderstood the spirit of your sentence. I've intentionally refrained from doing a literal translation.) 2. The reason is because I wasn't there at that time. কারণ আমি তখন সেখানে ছিলাম না (Your translation is also correct; even if it's slightly superfluous. However, you need to add তখন or সে সময়ে to indicate "that time".)