问题
选择题
Peter is busy ___________ at school, but he never forgets __________ exercise every day.
A．work, doing
B．working, to do
C．work, to do
D．working, doing
答案
答案：B
题目分析：句意：彼得在学校忙于工作，但是他每天都不会忘记锻炼身体。be busy doing sth 忙于做某事，forget to do sth忘记做某事，故选B
点评：英语中有很多固定的用法，诸如finish,enjoy,mind,practice等词后接动名词的形式，而would you like，ask,tell等词后都接动词不定式的形式，此类固定用法要求学生进行牢记。