He decided to go bike riding .改为同义句,
问题描述：
He decided to go bike riding .改为同义句,
He _ _ _ _ to go bike riding.He _ _ _to go bike riding
答
1. made up his mind
2. made a decision
即：decide to do sth = make up one's mind to do sth = make a decision to do sth
决定做某事；下定决心去做某事