"he was annoyed at being disturbed"

"they tore down the main street, firing at anyone in sight"

"People in lighter vehicles are at a disadvantage in collisions with heavier vehicles."

"at fourteen he began to work as a mailman"

"he's at a conference in Scotland"

"she smiled at him"

"they live at Conway House"

"at college"

"There will be a complete blackout tonight at eleven o'clock."

"he lives at 20 Church Street"

"Prices start at £145 for 3 nights for 2 people for our winter weekends in Keeper's Cottage."

"placed them at a serious disadvantage"

"the ship called in at Cork"

"the sea is cooler at night"

"who was at the wedding?"

"she got off the train at Belfast"

"at present"

"these are the things I'm good at"

"she was constantly at the telex machine"

"she was driving at 125 km an hour"

"at the beginning of the century"

"at the end of the week"

"Leslie pointed at him"

"she feels at ease here"

"to stare at sb"

"he comes home at weekends"

"he appeared at ten exactly"

"they tore down the main street, firing at anyone in sight"

"She went back to her job as a teacher while I stayed at home with Louise."

"he is poor at giving instructions"