阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

    Susan had problem and it worried her a lot. Last Sunday, her friend Ben (come) to her home to do the homework with (she). After they finished their homework, it started to rain. Susan lent her umbrella Ben, Ben hasn't returned it to her yet. Susan's grandmother gave the umbrella to Susan as her (thirteen) birthday gift and it is very special to Susan. Susan felt (embarrass) to talk about it to Ben. She had no idea what to do next. Her father told her maybe Ben has forgotten it and he suggested Susan to tell Ben the (true). Now, Susan (decide) to follow her father's advice. She thinks Ben will be very happy to give umbrella back.