[ Vocabulary ]
a substance used to keep people from getting a disease
A. protect
B. symptom
C. vaccine
D. virus
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Present Perfect vs Past Simple TensePrefixes SuffixesMixed GrammarPresent, Past, Present Perfect and ComparativePronouns ( Interrogative )Stative Verbs and TensesAuxiliary WordsGrammar, Literature, and VocabularyTenses UsageRegular Plural NounsOther quiz:
Grammar and Vocabulary › ViewThe detective hid _______________ a tree and watched the lady whom he was following.
A. over
B. inside
C. behind
D. between
Grammar › View
-Excuse me? How much _____ the dress _____? ( to cost )
-20 dollars, ma’am.
A. does ____ cost
B. costs
C. will cost
D. has been costing