It took her a long time to ______ the skills she needed to become a famous player

Hello, Tom. What a coincidence! I ______ about you. And here you are. 

It is the first time I ______ this kind of music.

Those who said looking after children was an easy way to make money obviously ______ such a troublesome boy, she thought

It was the third time this term that the teacher________with the naughty student.