We all agree that it is good to help those in need, but when ______ comes to giving away our money, things become strange.
The lady walked around the shops, __________ an eye out for bargains.
__________ the result of the examination, he went to the teacher's office to ask about it.
The news shocked the public, __________ to great concern about students' safety at school.
Have your ever been upset when __________ to yourself after your mobile phone battery runs out in the middle of a call?
The president of the university arrived yesterday, __________ the start of his short visit to China.