Run-On Sentence Check

The popsicle was melting in my hand and I should've eaten it faster.

• This sentence is correct.

• The popsicle was melting in my hand, I should've eaten it faster.

• The popsicle was melting in my hand, and I should've eaten it faster.

The cow jumped over the moon. It broke its leg.

• The cow jumped over the moon, and it broke its leg.

• The cow jumped over the moon, it broke its leg.

• Both A and B are correct.

The books I had been saving for many years got damaged in the storm they smell moldy now.

• This sentence is correct.

• The books I had been saving for many years got damaged in the storm. They smell moldy now.

• The books I had been saving for many years got damaged in the storm, they smell moldy now.

Sandy exercised and walked the park.

• This sentence is correct.

• Sandy exercised, and walked the park.

• Sandy exercised. And walked the park.

Ally didn't study so she didn't pass her test.

• This is correct.

• Ally didn't study. So she didn't pass her test.

• Ally didn't study, so she didn't pass her test.