[ Modal Verbs ]
Students (pay) attention to the teacher if they want to learn.
A. have to
B. must
C. should
D. mustn’t

Random Topics:
Will vs Verb InfinitivesPassive Voice with Modal VerbsActive and Passive Gerunds and InfinitivesFigurative LanguageConjunctions and PrepositionReported Speech and TensesSimple Present and Present ContinuosClauses and ConjunctionMust or Mus notComparative AdjectivesOther quiz:
Time Clauses of Future › ViewAfter we _____________ dinner this evening, we’ll watch TV.
A. eats
B. eating
C. will eat
D. eat
Prepositions › View
I’ll have a bath _____ I go to work.
A. after
B. as soon as
C. before
D. while
Grammar › ViewWe keep the …………… copies of all our reports in a special master file.
A. primitive
B. characteristic
C. original
D. elder
Modals of Obligation & Prohibition › View
He _____ wear a helmet when riding his bike.
A. must
B. can
