[ Grammar ]
The principal opened the office door_____but the student was too nervous to enter.
A. comma ,
B. period .
C. no punctuation
D. semicolon ;

Random Topics:
Types of Simple SentencesModals, Infinitives and GerundsSentence LabelingVerb TenseCompound SentencesModal Verbs & Perfect InfinitiveSimple Present TenseModals of ProbabilityPrepositional PhrasesBare Infinitive and To InfinitiveOther quiz:
Present Perfect Tense › ViewMy cousin has _______ some cookies.
A. make
B. making
C. made
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Narrative Tenses › View
when she _____a tunnel.
A. entered
B. had entered
C. is entering
Past Tenses › ViewJoe _____ downstairs and ______ his leg.
A. fell, broke
B. had fallen, broke
C. had fallen, had broken
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Past Tenses › View
My aunt ___ in an international bank for fifteen years.
A. use to work
B. worked
C. used to worked
