My uncle from Hongkong has changed so much that I could hardly ________ him at the airport. 

Mrs Turner told me that she ______ to many cities across China when she was young. 

As he approached the door, Mike looked into the room again to see if he ________ anything behind.

Last month, the Japanese government expressed their thanks for the aid they ___ from China.

 As soon as little Tom had ________ a little from his operation at his back, his first thought was to get   out to meet his friends.