[ Phrasal Verb ]
Flouride greatly helps ……………. tooth decay, so it’s commonly used in toothpaste.
A. prevent
B. cause
C. prolong
D. conclude
Select your answer:
Random Topics:
ComparisonGrammar: Adjectives & PrepositionsPast Simple and Past ProgressiveWill & Be going toGrammar / PronounsMesopotamia VocabularyModal Auxiliary VerbsModals for Necessity and SuggestionsAdverbs of How Something is DoneOther quiz:
Present Perfect or Past Simple Tense › ViewIn the past, people _________ smart phones.
A. not have
B. not had
C. didn’t have
D. didn’t had
Grammar › View
It might mean that it is going to rain
A. Maybe it is going to rain
B. It could be it is going to rain
C. Probably it is going to rain
D. It is going to rain