I need help if the sentence are good and i'm not sure with the underlining.

Make up a sentece that contains an adjective cluase, and underline the adjective clause.

Sentence #1: Celery, which people often leave uneaten, is very nutritous.

Make up a sentece that contains an parenthetic element, and underline the parenthetic element.

Sentence #2: Earl, however, was late.

Make up a sentece that contains an adverb clause, and underline the adverb clause.

Sentence #3: Before Mia started police training, she took care of kids.

Make up a sentece that contains an Verbal phrase, and underline the Verbal phrase .

Sentence #4: Our flags, torn to ribbons by the gale, hung limply about mast.

I can't tell about the underlined parts since that doesn't show up, but the sentences are all good and fit the directions.

is it okay if you can tell me which part?

Sentence #4: Our flags, torn to ribbons by the gale, hung limply about the mast.

In this sentence, "torn to ribbons by the gale" is a participial phrase that acts as an adjective to describe the flags. To underline the verbal phrase, you would underline "torn to ribbons by the gale".