No, he doesn't always bring flowers to his sister on her birthday. He brings flowers to his sister on her birthday only sometimes.
No, he doesn't always invite his friends to his birthday party. He invites his friends to his birthday party only sometimes.
No, he doesn't often visit his relatives.He visits his relatives only sometimes.
No, she doesn't often write letters to her friend. She writes letters to her friend only sometimes.
No, she doesn't always send presents to her cousin. She sends presents to her cousin only sometimes .