Task 1.

0.  If I am happy, I smile.

1. If I am happy, I will smile.

2. If I were happy, I would smile.

3. If I had been happy, I would have smiled.

Task 2. 

1. Mike usually drive a car.

 Car is drove (by Mike).

2.Mike is driving a car now.

Mike is being drove now. 

3. Mike has drove a car.

Car has been drove.

Task 3. 

1. I am eating apples.

Tom said that he was eating apples.

2. I eat apples every day.

Tom said that he ate apples every day.

3. I ate apples yesterday.

Tom said that he had eaten apples day before.

4. I have eaten apples for five years.

Tom said that he had eaten apples for five years.

5. I had never eaten apples.

Tom said that he had never eaten apples.

The and    :-)