--Mysonusuallygoestoschoolwithout

问题详情：

 --My son usually goes to school without ___________ breakfast.

 --It’s __________ unhealthy habit. You had better ask him to change it.

        A. /, a                      B. the, an            C. /, an              D. the, a

【回答】

C

知识点：冠词

题型：选择题