... is very sunny today, and people feel....don't need to wear too much clothes.
... varieties of clubs/associations ... , and I chose to join two of them.
I find that a teacher who taught me last semester teaches me another subject this semester. I'm very fond of his teaching style,though I have almost been absent from his class last semester.
It is sunny today.I feel so warm that I needn't wear many clothes.(sunshine是名词,不能作表语)
Today,I found various associations recruiting members by accident and I chose two of them to join in.(found和were都是动词不能同时存在,choose的过去式是chose,chosen是过去分词,词组参加是join in)
The teacher who will teach me this semester is the same one that taught me last semester.I like his style of teaching.(我觉得你句子的时态不太对,teach的过去式是taught)
楼主,纯手工打出来的,采纳一下下吧!