问题补充:
Peter is busy __ at school, but he never forgets _ exercise every day.
A. working; doing B. working; to do C. at work; doing
答案:
解析:句意:彼得在学校忙于工作但他从来不会忘记每天锻炼。be busy doing sth,忙于做某事。forget to do sth,忘记做某事。故选B。
时间:2020-02-15 20:36:27
Peter is busy __ at school, but he never forgets _ exercise every day.
A. working; doing B. working; to do C. at work; doing
解析:句意:彼得在学校忙于工作但他从来不会忘记每天锻炼。be busy doing sth,忙于做某事。forget to do sth,忘记做某事。故选B。