a pity that I forgot to bring your dictionary.A. It’sB. This isC. That’sD. There’s

问题补充：

a pity that I forgot to bring your dictionary.

A. It’s

B. This is

C. That’s

D. There’s

答案：

(答案→)A. It’s

B. This is

C. That’s

D. There’s

解析：考察强调句型。本句中it做形式主语，指代下文that I forgot to bring your dictionary.

从句内容，其它选项无此用法。故选A。