de present continuous in bevestigende zinnen

Welke zin is correct?
1. He is walk home.
2. He walking home.
3. He is walking home.
Welke zin is correct?
1. Listen. Susan sings.
2. Listen. Susan is singing.
Welke zin is correct.
1. They walk to school now.
2. They are walking to school now
Welke zin is correct?
1. Peter and Jim is playing the guitar.
2. Peter and Jim are play the guitar.
3. Peter and Jim is play the guitar.
4. Peter and Jim are playing the guitar.
Welke zin is correct?
1. He is smoking a cigarette.
2. He is smoke a cigarette.
3. He smoking a cigarette.
Welke zin is correct?
1. The sun is shining today.
2. The sun is shine today.
3. The sun shining today.
4. The sun shine today.