用方框中所给单词的适当形式填空，每词仅用一次。

five   hear from   pilot   invite   without

【小题1】Little Tom was clever and found his house ________ difficulty.
【小题2】She is expecting her sons to be great ________.
【小题3】Sally was very happy to ________ her old classmates.
【小题4】Jack is the ________ person to walk across the bridge.
【小题5】Linda ________ Sam to her birthday party, but he refused.