Such a problem is＿＿＿＿difficult for a primary school student ＿＿＿.

He hesitated for a moment before kicking the ball, otherwise he ______ a goal.

下列各句加横线成语和熟语的使用，恰当的一句是

Do you mind my taking the books away—________.

Thank you for carrying me to hospital, young man!It’s kind of you.—_____________. Helping others makes me happy.