As soon as Tom got to know his mother lost her way, he walked ________ out of his office with a pale face. ( )
quickly
carelessly
peacefully
smoothly
Be quick, we’ll be late for the meeting.
I still remember my first teacher __________ we haven’t seen each other for many years.
They have been friends __________ they were at primary school.
I’ll go to visit my uncle in England ________ the winter holidays start.
The mobile phone has changed people’s life a lot ________ it was invented.