_________reached the classroom when the teacher came.

________ was known to them that the boss had broken his promise ________ he would give them a rise

Mom, my little sister is crying all the time.——Mary, be ________! She feels unwell. You should take good care of her.

The flowers his friend gave him will die unless _________every day[ ]

Who did English homework better, Leo or Nick—Leo was faster, _______I think Nick did ________