сделать предложения вопросительными и отрицательными обьясняя used to и use 1. i used to smoke.2. when david was young he used to swim once year.3. ted used to dance every night,but now he studies.4. i used to eat dinner at 6 o'clock.5. my friend used every chance to help me. 6. i've lost my key and i used a nail to open the door. 7 a thermometer is an instrument used to measure temperature. 8. don't let the child use a knife