A successful researcher always … credible sources to support their arguments.
A. cite
B. cites
C. cited
D. is citing
E. will cite

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Adverbs and Adverbial PhrasesHope, Thank, Modal VerbsPast Simple VS Used toNoun, Verb, AdjectiveGrammar (either..or.. and neither..nor..)Modal AuxiliariesBe going to / WillAction vs Linking Verbs/ Verb PhrasesAdverbial Concession ClausesAlthough, Though, In spite of, DespiteOther quiz:
Vocabulary › ViewSamuel was really looking forward to the school play, but it got canceled at the last minute. What does the word “Disappointed” mean?
A. Sad or displeased because someone or something has failed to fulfill one’s hopes or expectations
B. Having lost confidence or enthusiasm
C. Feeling or expressing revulsion or strong disapproval
D. Feeling or showing embarrassment
Articles › View
On the way to London we passed through a small village with ____ old church. We stopped to visit the church. It was a beautiful building.
A. —
B. an
C. the
D. a
Modals for Necessity and Suggestions › ViewChoose the correct use of the modal in this sentence:
You must wear a helmet.
A. Necessity
B. Lack of necessity
C. Recommendation
Infinitive and Gerund › View
I can’t stand _________ mistakes all the time.
A. make
B. to make
C. making
