问题
选择题
His English is improving _______, which makes both his parents and his teacher happy.
A．now and then
B．little by little
C．sooner or later
D．one after another
答案
答案：B
题目分析：句意：他的英语在一点一点的提高，这让他的父母和老师很高兴。这里使用短语，四个选项的含义分别是：A. now and then时而，B. little by little一点一点的， C. sooner or later迟早， D. one after another一个接一个，所以选B。