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Father gives me advice from time to timetime to time 画线A never B always C at a time D now and then

题目详情
Father gives me advice from time to time
time to time 画线
A never B always C at a time D now and then
▼优质解答
答案和解析
from time to time 1.时常,有时,不时 2.不时地,时常 3.时常,有时
now and then 1.时而;不时;偶尔 2.时而,不时
选D