—Isawyourmotherinthelibraryjustnow.2       —It

問題詳情：

—I saw your mother in the library just now.2

        —It ______ her. She said she would go there.

 A. can be                  B. must be           C. can’t be

【回答】

B

知識點：情態動詞

題型：選擇題