非謂語動詞的恰當形式填空：

The ________(worry)mother looked at her ________(worry)son, looking ________(worry)．

非謂語動詞的恰當形式填空：

These seats are ________(reserve)for you．

非謂語動詞的恰當形式填空：

John Snow told the story about the ________(astonish)people in Broad Street．

非謂語動詞的恰當形式填空：

The experience ________(gain)will be of great value to us．

非謂語動詞的恰當形式填空：

There is a car ________(park)outside the house．