—Do you think our teacher is ？—Yes he always corrects our homework and prepares his less

问题补充：

—Do you think our teacher is ？

—Yes， he always corrects our homework and prepares his lessons.

A. careful； careful

B. careful； carefully

C. carefully； carefully

D. carefully； careful

答案：

A. careful； careful

(答案→)B. careful； carefully

C. carefully； carefully

D. carefully； careful

解析：词义辨析。Careful形容词，仔细的，小心的；carefully副词，小心地。句意：你认为我们的老师细心吗？——是的，他总是细心地批改我们的作业，仔细的备课。形容词在be动词后作表语，副词位于动词后修饰动词，故选B。