"THEN" and "THAN"
"Then" relates to time. "Than" is used for comparison. Ex.: First, we'll have lunch, and then we'll go for a walk. He is more experienced than I am.
Happy Birthday - Unforgettable Memories
"WHO'S" and "WHOSE"
"Who's" is a contraction for "who is." "Whose" indicates possession. Ex.: Who's attending the conference? Whose jacket is this?
