They have got lost, or had an accident.

There was an excited expression ______ his face when he heard the good news．

_over everything whenever we want to make adecision, many people believe, and we will have less chance of making mistakes.

－Do you think this orange skirt looks good _________my daughter －Yes, I do. Girls look nice ___________orange.

Where are you going for your winter vocation—– We _______ go to Hainan, but we are not sure.