I do every single bit of housework while my husband Bob just does the dishes ________．

I do every single bit of housework while my husband Bob just does the dishes ________．

A.now and then

B.by and by

C.step by step

D.little by little

答案及解析： A

now and then：偶尔；by and by：不久；step by step：逐步；little by little：逐渐地