English is very important in our daily life. To improve your English language skills, you should ____.

①be active in practice

②only study things like grammar and vocabulary

③listen to a tape and repeat out loud

④avoid speaking English in public for fear of losing face

⑤take note of (注意) the key words in an article for better understanding

A、①③⑤

B、②③④

C、①②③⑤