I spent half an hour ________ the piano every day.

It’s clever _____ you to help me work out this difficult maths problem. Thanks.— You are welcome. Now it’s easier ______ you to understand it.

I think listening is just as __________as speaking in English learning.

Mary wrote an article on ________ the team had failed to win the game

–Mo Yan’s novels have attracted public attention.–Yeah. Now there are his books _____ in every bookstore.