Ответ:

1) People go to the doctor if they are ill (after when we do not use will)

2)The teacher will be pleased if you do your homework well(after when we do not use will)

3)If you help me to fix my bike, I will lend you my new CD(first conditional)

4)Karen will fail the exam unless she studies more (after unless we do not use will)

5)If Ben doesn't win the competition, he will be sad (first conditional)

6)We will go to the beach at the weekend unless it doesn't rain

бъяснение: