If you want to get good grades, , you should listen to the teacher in class.
A. at first; careful
B. first of all; carefully
C. for the first time; careful
D. first of; carefully
网友回答
A. at first; careful
(答案→)B. first of all; carefully
C. for the first time; careful
D. first of; carefully
解析：此题考查副词或副词短语，first of all表示首先，carefully表示仔细地，用来 修饰listen to。