问题
选择题
John hadn’t been able to stop smoking suddenly;he had to control his smoking desire ________.
A．by and by
B．sooner or later
C．little by little
D．from time to time
答案
答案：C
by and by 不久以后，不一会儿；sooner or later 迟早；little by little相当于step by step 渐渐地；from time to time 时常地。句意为：约翰不能立即把烟戒掉，他得慢慢地控制烟瘾。