Please don’t drop litter , you should throw it into the dustbin .
A. careless; careful
B. carelessly; careful
C. carelessly; carefully
D. careless; carefully
网友回答
A. careless; careful
B. carelessly; careful
(答案→)C. carelessly; carefully
D. careless; carefully
解析:本题需要的 都应该是副词,第一个空为无意的,第二个空,表示的是小心的,故选C