. Viết dạng đúng của từ trong ngoặc để hoàn chỉnh các câu sau. (4 câu, 1,0 điểm)
1. I'd just like to stress the _______ of politeness in this job. (important)
2. She is one of the fastest _______ in my club. (swim)
3. She runs a very _______ computer business. (success)
4. There are many _______ in our new library. (bookshelf)