问题
选择题
---What do you often do _______ your free time ?
--- I often read. I read __________ interesting books .
A．in; lot
B．on; a lot of
C．in; lots of
D．on; a lot
答案
答案：C
在某人的闲暇时间，用介词in，因此将答案BD排除，同时a lot of可以修饰名词，而lot不能，故选答案为C