When Edison was a child, he was always asking questions and ______ new ideas.

After the fall of the Qing Empire, some towns near the west part of the Great Wall ________ and the Wall itself _______.

She is ____with her mother this afternoon

The naughty boy who _____ in bed ____ to his parents, saying that he was ill and couldn’t go to school.

It was not until she came to see us ____ her mother was ill in bed.