Where is your mother?— She _______ to Sichuan on business. She has ______ there four times recently.

Tom is ___________ that he can’t go to school.

Her husband earns ____ she while they do the same amount of work.

Look, so many people are running out of the station. I wonder what ________.

They are going to go on a world tour _____ they will perform in ten different cities.[ ]