Anyone who is good at singing can ________ the activity in our school.

When Lucy got the gift from her mother , she couldn’t wait ______ it and have a look .

How will you yourself after you retire —I intend to get into golf to spend the rest of my life.

对加横线词语解释全都正确的一项是（ ）

He is not selfish at all; instead he is always _________ to help others in trouble