[ Essential and Nonessential Clauses ]
Which of these is needed to make the sentence make sense?
A. Essential clauses/phrases
B. Nonessential clauses/phrases

Random Topics:
Grammar: so and suchSentence Structure and ConjunctionsPassive with ModalsPast Simple and Past Continuous TensesAdjectives & PrepositionsConditional SentenceMuch, many, a lot of, a few, a littleParticipal PhrasesTenses and Verb FormsAdjectiveOther quiz:
Modal Auxiliary › ViewChoose the sentence that correctly uses the imperative form for a request
A. You must stop talking.
B. Can you stop talking?
C. Could you stop talking?
D. Stop talking, please.
Grammar › View
Adriana _______________ her homework last weekend.
A. did
B. does
C. do
D. done
Past Tenses › ViewWhich tense is used to describe an action in progress, or a repeated action that happened another event?
A. Past Simple
B. Past Continuous
C. Past Perfect
D. Past Perfect Continuous
Narrative Tenses › View
He ______ for an hour before he realized it was time to leave.
A. worked
B. was working
C. had been working