[ 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:
Present Simple vs Present Continuous › ViewEvery weekday I……. at seven-thirty
A. get up
B. am getting up
Idiom and Tenses › View
What does the idiom ‘hit the nail on the head’ mean?
A. To ignore the existing problem.
B. To try something new without a plan.
C. To do something half-heartedly.
D. To do something correctly or accurately.
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