Complete the sentences with one word in each gap. the first letter is given for you. 0. i attended a two-day first a_ _ (aid) course. 1. be careful with this knife. you can c_ _ yourself easily. 2. when you get injured, the first thing you need to do is stop the b_ _ _ _ _ _ _ by applying some pressure to the wound. 3. the first s_ _ _ _ _ _ _ of flu are a runny nose, sore throat and a cough. 4. after the operation, the doctor put a b_ _ _ _ _ _ on my leg and i had it changed regularly. 5. i don't like long car journeys because i often feel s_ _ _ in the car. 6. a lot of people do not take a p_ _ _ _ _ _ _ _ _ until a headache becomes really bad.