Mike ，sit ________.It's time _____class. A、good ;for B、well;for C、well ;to D、good ;to

忘记说了，选B well是副词 well修饰动词sit 意思是端正坐好 it's time for something是固定句型

B
well 是副词，修饰动词sit
for 是介词，放在名次前面

B

B

选B
sit是动词,所以选well(副词来形容动词,good是形容词)
It's time for sth./doing sth.是词组