Which sentence does not contain any errors in comma usage?
a. he walked to the rope grabbed it tightly, and climbed to the top.
b. the new mother was tired, but she was smiling proudly.
c. i finished painting hours ago yet the walls are still wet.
d. we could go downtown today or we could just relax at home.

hey there,

your answer is a) today we hope for clear skies.

let's look at the word(s) progressive verb. progressive means its happening right now. it is not going to happen and it has not already happened. it is happening right now. the sentence "today we hope" in option a is an example of a progressing verb. they are hoping right now. options b, c and d are not progressing verbs. they contain the words have, roared and will be. those words tell us that it has either happened or will happen. a is your answer.

best of luck,

- i.a. -