[ Grammar ]
The first electric lamp had two carbon rods from which vapor serves to conduct the current across the gap.
A. The first
B. which
C. serves
D. to conduct
Select your answer:
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Verb FormsSubject-Verb AgreementSentence CompletionVerbs + Gerund or InfinitiveNouns and VocabularyPast with ModalsGrammar ( going to)Past Simple TenseGrammar - Be going toPresent Simple & Present ContinuousOther quiz:
Grammar › ViewChoose the correct sentence:
A. She finished her work for the day, and then took a long lunch.
B. She finished her work for the day and then took a long lunch
C. She finished her work for the day and, then took a long lunch
D. She finished her work for, the day, and then took a long lunch
Grammar › View
He was promoted to the rank of ______ after the incident.
A. Sergeant first class
B. Sgt. First Class
C. Sgt. 1st Class
D. Sergeant 1st class