She ________ carefully, but she could ________ nothing.

A. listened to; listened to

B. heard; hear

C. heard; listened

D. listened; hear

She ______ carefully, but ______ nothing.

[    ]

　　A. listened, heard　　 B. heard, listened

　　C. heard to, listened  D. listened to, heard

　　After a long walk, Mary felt very ___1___ She wanted ___2___ something very much. Suddenly she saw an old house in front of her, so she went into the house. But she could find ___3___.“Is ___4___ in?”she cried. She couldn't hear ___5___. Then she seemed to hear something.“Is there anybody in the house?”she said to ___6___ . She ___7___ carefully again. But she could hear ___8___.

　　“Is there ___9___ with my ears?”she thought and felt afraid. She hurried off the house as ___10___ as she could.