[ Phrasal Verb ]
Flouride greatly helps ……………. tooth decay, so it’s commonly used in toothpaste.
A. prevent
B. cause
C. prolong
D. conclude
Random Topics:
Gerunds and TensesWho am I?Dependent PrepositionsNouns, Pronouns, Antecedents, and Singular and PluralModals for Necessity and SuggestionsCompound and Complex SentencesComparatives or SuperlativesSentence Structure and Grammar RulesComplex Sentences with Adverb ClausesUse of Prepositions or ConjunctionsOther quiz:
Tenses › ViewAt this time yesterday, the boys ____ in the park.
A. was playing
B. played
C. had played
D. were playing
Question Words › View
A: _____ is that girl?
B: She is my sister.
A. Where
B. When
C. Who
D. What
Grammar › ViewWhich sentence is in the past tense?
A. Crickets live in the tall grass out back.
B. Jason will count the coins in his collection.
C. I spent ten dollars on school supplies.
Grammar › View
A : What time is it ? (10.40)B : It is …..
A. Twenty to eleven
B. Forty ten
C. Ten to twenty
D. Eleven half forty