could you tell me which sentence is right(or they both are wrong) and why? 1、That's why some people are sad 2、That's why some people sad thanks a lot

Grammar problem,please help me. Swallows are chemically preserved in the pose in which they perished. what does "in the pose" mean in this sentence and why use "in which" here? thankyou very much!

what's the part of speech of "bright" and "red" in a Sentences Lake Natron burns bright red. What's the part of speech of "bright" and "red" in this sentence? And what do each of them modify?please tell me,thankyou!

Some words's meaning in a sentence "If A could only free themselves from sth,they would begin to see that their problems are not insoluble." This sentence is in the context of A are not free themselves from sth in reality what do the "if" and "only" means here?please tell me,I am very grateful!

I am confused about some word order in this sentence.Please you help me,I would be very grateful! "Advocates of the practice have taken issue with his team's use of such evidence as news accounts to support his conclusion that goal-setting is widely over-prescibed." is "evidence as news accounts"should be changed to "news accounts as evidence"? please tell in in English or Chinese,thankyou very much.

please tell me the mean of series words in a sentence. "If you are ever going to be able to cope with stress,depression,or worry,you need oxygen in your cells and a more optimistic attitude." please tell me what does "ever going to"mean in this sentence?