【推荐1】Students in our school can take part in v________ activities after class, such as sports, chorus, dancing. painting. hands-on experiments etc. (根据首字母拼写单词)

【推荐3】词性转换
1. refer vi.提到；参考；查阅 vt.查询；叫……求助于→________n. 指称关系；参考；参照；涉及
2. base vt. 以……为据点；以……为基础 n. 底部；根据→________adj. 以（某事）为基础的；以……为重要部分（或特征）的→________adj. 基本的；基础的→________adv.根本上；基本上→________n. 基础；根据
3. vary vt.& vi.使多样化；变化→________adj.不同的；各种各样的→________n. （植物、语言等的）变体；异体；多样化
4. appreciate vt.欣赏；重视；感激；领会 vi.增值→________n. 欣赏；感激；感谢
5. equal n. 同等的人；相等物 adj.相同的；同样的；能胜任的→________adv.同样地；相等地；公平地→________n. 平等；相等
6. relate vt.联系；讲述→________adj.有关系的；有关联的→________n. 关系

【推荐1】The burning plastic gave off_____(有毒的) gas, which is harmful to our health. (根据汉语提示单词拼写)

【推荐2】There is a s________ chance that John will pass the examination because he hasn’t worked hard enough. （根据首字母单词拼写）

【推荐3】It was on a f________ cold night that he completed his masterpiece. （根据首字母单词拼写）