[ Vocabulary and Grammar ]
The scientist acted as an ________ during the experiment.
A. observation
B. observe
C. observer
D. observing
Random Topics:
Auxiliary VerbsFuture Continuous, Future Perfect and Future Perfect ContinuousGrammar - Present Perfect TenseJobsNouns, Articles, DeterminersState Verbs and Action VerbsGrammar and EssayAcademic VocabularyAdverbs and Adverbial PhrasesTenses and ConclusionsOther quiz:
Tenses - Present and Past › ViewAbout 375 million people__________ (speak) English as their first language.
A. speaks
B. is speaking
C. have spoken
D. will speak
Wish Sentences › View
He wishes he …………………..the exam.
A. passes
B. pass
C. passed
D. will pass
Grammar - Be going to › ViewI _______________________________ to wash the car tomorrow morning.
A. will going
B. am going to
C. am going
D. will going to
Present Perfect and Past Simple › View
Past Simple refers to?
A. actions or events in the present
B. action or events in the past
C. action or events in the future