1.Despite his serious illness,hệ tried to complete the project

=>Although he was

2.Mike had to give up (sing)..... because of his throat cancer

`1.` Although he was seriously illness, he tried to complete the project.

`->` Although `+` clause, clause: mặc dù...nhưng...

`->` tobe `+` (adv) `+` adj/Noun.

`->` try to do sth: cố gắng làm gì

`2.` singing

`->` giới từ `+` Noun/V-ing

`->` because of `+` Noun/Noun Phr, V-ing: bởi vì...