QUES: About a week ago Lilit went on heat again and she and we had a visit from Elvis for some days

correct the punctuation.

CORRECTED: About a week ago Lilit went on heat again, and she and we had a visit from Elvis for some days.

QUES: Died in ster Lindet Denmark 10 years old

correct the punctuation.

CORRECTED: Died in ster Lindet, Denmark, 10 years old

QUES: Despite its name the marine borer is a crustacean which feeds on cellulose the primary component of woodwork

correct the punctuation.

CORRECTED:
Despite its name, the marine borer is a crustacean which feeds on cellulose - the primary component of woodwork.