[ Sentence Completion ]
As a courtesy to other audience members, please refrain from —– your mobile phone once the performance has started.
A. use
B. used
C. using
D. to use

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TOEIC Tenses, VerbsCountable Vs Uncountable NounsGrammar: Simple Past and Past ContinuousPast Continues TenseGrammar SuffixesPresent Simple VS ContinuousHow much and how manyModals and Past ModalsBare Infinitive and To InfinitiveGrammar: Reported QuestionsOther quiz:
Prepositions › ViewIdentify the preposition in the following sentence:
The cat jumped over the fence.
A. cat
B. jumped
C. over
D. fence
Grammar › View
Tet is a Vietnamese festival ________ occurs in late January or early February.
A. what
B. whom
C. which
D. when
Homonyms › ViewPlants benefit from a daily spray of ___.
a. missed
b. mist
Zero Conditional › View
What ________________ you do in my situation? I need your advice.
A. can
B. should
C. have to
