根据首字母提示补全单词,使句子完整通顺

问题描述:

根据首字母提示补全单词,使句子完整通顺
1.
-How is it going?
-Not b----------------.
2.
-What are you doing
-I'm c---------------- dinner for my family.
3.My brother likes s------------ .He is a good student.

bad
cooking
studying