Mary didn't come to our party yesterday because she was busy preparing for the exam. We all felt sorry _____ her.
Seeing her father, the little girl ran to him, her schoolbag_________________behind her.
In order to improve English, ________________.
With his work_________________on time, he felt very excited.
Sarah, hurry up. I’m afraid you won’t have time to__________________before the party.
Children will work actively if_________________.