Children should be encouraged up outside interests， such as music or sport. A. to takeB.

Children should be encouraged up outside interests， such as music or sport.
A. to take
B. taking
C. to have taken
D. having taken

(答案→)A. to takeB. takingC. to have takenD. having taken解析：根据 encourage sb to do sth 这一句式可知，空格处应填不定式，故可排除 B 和 D；再根据 encourage 的意思可知，空格处应填一般式，而非完成式，因为“鼓励某人做某事”中的“做某事”肯定发生在“鼓励”之后，而非“鼓励”之前。

感谢回答，我学习了