从方框内选出正确的单词完成句子。 boring relaxing difficult fun interesting 1. John sits on the chair. It's very _____. 2. Sun can play volleyball. She thinks it's very _____. 3. I don't like maths. It's _____. 4. That book is very _____. I like it very much. 5. I can't play computer games. It's very _____.