very important for her to work hard in all her subjects.A. That’sB. This isC. It’sD. Its

问题补充：

very important for her to work hard in all her subjects.

A. That’s

B. This is

C. It’s

D. Its

答案：

A. That’s

B. This is

(答案→)C. It’s

D. Its

解析：此题重点考查固定句型结构Its+adj+for sb.to do sth表示对某人来说做某事怎样。根据语境可知此句的含义是对她来说努力学好各科是非常重要的，故选C。