—Is this his ruler?—No, _.A.its notB...

2023-02-13

【题目】—Is this his ruler?
—No, ________.
A.its not
B.it is
C.it isn't

【答案】C
【解析】句意:—这是它的尺子吗?—不。___。be动词所在一般疑问句的否定回答结构是No+主语 +be not,be not必须用缩写形式,故选C。