Reorder the words to make meaningful sentences: study / didn't / he / so / the / history /, / He / failed / exam / hard

Reorder the words to make meaningful sentences 
3. study / didn't / he / so / the / history / ,/ He / failed / exam / hard /./
4 been / a / I / of / volunteers / in / Asia / have / member / left / since / I / university /./
giúp em với ạ