One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English

One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them.

1. If we will reduce the speed of population growth, there will be less pressure on the earth.

2. Unless we leave a bowl of water under the sun, it will evaporate.
3. If we continue to use fuels at the current rate, we would soon have to face a fuel crisis.
4. If I am 10 centimeters taller, I would play basketball.
5. If the doctors could find in the remedy, a lot of people would be saved.
6. If she bought that house now, she ran out of money.
7. What you would do if you could speak French well?
8. If I had known he is not at home, I wouldn’t have gone all the way to his house.
9. If I had known that the road were flooded, I would never have taken that way.
10. If I were you, I will go to the dentist’s and have the tooth checked.