[ Grammar ]
Electron storage rings ___ in investigations of the structure of materials.
A. They are used
B. That are used
C. Used
D. Are used
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Pronouns, Sentence Structure, and Figurative LanguageGrammar-Verbs & Nouns Singular, Plural, GenderEnglish for TourismAdjectives and VocabularyPassive ModalsPhrasal VerbSecond Type ConditionalVerbs: Action, Linking, and HelpingPresent Simple QuestionsTime ConjunctionsOther quiz:
a, an, the, Zero Article › ViewShe was ___ founder of ___ order of nuns called the Missionaries of Charity.
a. a / an
b. a / X
c. the / X [Nothing]
d. the / an
Modal Verb › View
We ___ drop litter on beaches. It pollutes them.
A. Mustn’t
B. Can should
C. Should
D. Dare
Continuous Tenses › ViewWhich sentence best illustrates the use of the future continuous tense?
A. They were having dinner.
B. They are having dinner.
C. They will be having dinner.
D. They had dinner.
Gerund & Infinitives › View
It is important ____ people back right away
A. calling
B. to call