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
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Grammar - Present Perfect TenseCity PlacesQuantifiers & Modal VerbsDirect and Indirect SpeechAdjective and AdverbSentences and Non SentencesIdentifying Sentence TypesInterjections, Tag Questions and Nouns of Direct AddressPast Simple - Present PerfectSimple Present and Past TensesOther quiz:
Infinitives and Gerunds › ViewShe enjoys ___ new recipes on weekends.
A. trying
B. to try
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The twins always wear the same clothes, making it hard to tell them apart.
A. If the twins dressed differently, it would be easier to distinguish them visually.
B. Without their similar clothing, it would be impossible to tell the twins apart
C. If the twins wore unique clothing, it would be difficult to tell them apart.
D. If they didn’t have such similar features, dressing differently would help distinguish the twins.
Grammar › ViewMy mother told me to __________ on warm clothes before I went out.
A. get
B. taking
C. have
D. put
a, an, the, Zero Article › View
Which article correctly completes each sentence?
Did Ranita ____frog really sleep in Félipé’s bed?
A. A
B. An
C. The