Susan was reading a newspaper on the train_________ a strange old man come over.

I haven’t gone back to my hometown _______I left it in 1993.

   _    we were walking along the river, we heard a cry for help.

Last Sunday I went shopping with my mother ________ bought nothing. 

 - What's wrong with you, Madam? - I've lost my valuable painting. But a week had gone by _______ I knew it was missing.