[ Grammar ]
_______is necessary for the development of strong bones and teeth.
A. It is calcium
B. That calcium
C. Calcium
D. Although calcium

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Verbal and Appositive PhrasesPrepositionWorld Literature VocabularyModal and Phrasal VerbsTenses and PronounsLinking WordsUncountable NounsModals for DeductionRelative PronounGrammar - Collective NounsOther quiz:
Grammar and Vocabulary › ViewThat was the ________ meal I’ve ever eaten.
A. baddest
B. worse
C. worst
Grammar › View
Complete the sentence by choosing the correct missing connecting word:
The flight was canceled. ______, we traveled by bus and had a great time.
A. Whether
B. Furthermore
C. Since
D. Nevertheless
Idioms › View“Open a can of worms” means….
A. share information that complicates the situation
B. getting ready to go fishing
C. openings up a can with stinky food
D. having a difficult time
Grammar › View
That smells good! What ________
A. do you cooking?
B. are you cooking?
C. do you cook?