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• Security checks have become really strict at the airport.
• She works on the checkout at the local supermarket.
• The two vans collided at the crossroads.
• Why wasn't Stephen at the meeting, then?
• Turn left at the traffic lights, and you'll see the hospital straight ahead.

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• People in Britain legally reach adulthood at 18.
• Rioters hurled rocks and petrol bombs in clashes with police at the weekend.
• My last class ends at 4 o'clock.
• I always like to leave my desk clear at the end of the day.
• I was married with four children at your age.

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• The old man clenched his fist and waved it angrily at us.
• She could no longer contain her anger and shouted at him uncontrollably.
• The talks are aimed at finding a mutually agreeable solution.
• She darted an angry look at me and I shut up.
• He fired six shots at the target, but his aim was terrible, and he missed all of them.

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• There was a chorus of disapproval at his words.
• It was a courageous decision to resign in protest at the company's pollution record.
• He looked very disappointed at their decision, but did not argue.
• I cringed at the sight of my dad dancing.
• We were all delighted at the news.

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• I'm not much good at knitting .
• Dave is normally very bad at remembering birthdays.
• I expected her to be better at French after studying it for so many years.
• Your mother's really brilliant at Scrabble.
• You're even worse at maths than I am!

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• Granddad wrote 'at' in the address instead of the @ symbol - that's why it didn't work.
• Where is the key for 'at' on this keyboard?
• You missed out the @ in your email address.
• Hold down the shift key, otherwise you will type an inverted comma instead of an 'at' sign.
• Alternatively, you can email your order to directcustserve@cambridge.org.

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• The costs of cleaning up the bay are estimated at $1 billion.
• We sell a wide range of cosmetics and toiletries at a very reasonable price.
• When you buy a new computer, you usually get software included at no extra cost .
• With inflation at 500%, the country faces a crisis of confidence.
• Water boils at 212° Fahrenheit and 100° Celsius/Centigrade.

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• He felt completely at ease.
• He says he's at peace when he's walking in the mountains.
• Your father is hard at work in his study.
• They've been at war for the last five years.
• Of the ten men who escaped this morning from Dartmoor Prison, only two are still at liberty .