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I usually r___ home on time after school.It is c____ that he is a good teacher.

题目详情
I usually r___ home on time after school.
It is c____ that he is a good teacher.
▼优质解答
答案和解析
第一个是return,到家,我们这两天老做这道题,老师说是这个答案.
第二个不会是certainly,因为it is+形容词,certainly是副词,应该是certain .