Although you have lots of difficulties, you must _______your work.

In our city, ________ college students want to work as a teacher in holidays.

I often go to school_____foot, but I had to go to school_____taxi yesterday because of rain.[ ]

Why are you worried? — I’m expecting a call from my daughter. She _______ abroad for three days.

This is ____ song I told you about yesterday. Isn’t it _______ beautiful one?