[ Relative Clauses ]
Fleming’s discovery of penicillin, ————–, had a major influence on the lives of people in the 20th century.
A. which was awarded the Nobel Prize
B. which awarded the Nobel Prize
C. that he was awarded the Nobel Prize
D. for which he was awarded the Nobel Prize

Random Topics:
Present Continous TenseSimple Past TensePerfect and Past TensesModals of Obligation and PermissionIELTS GrammarRelative ClauseGerundsMain Idea and Sentence StructureFormal & Informal WordsArticles and PrepositionsOther quiz:
Grammar › ViewChoose the correct verb tense for the following sentence: “By next year, I ___ all my exams.”
A. will pass
B. passed
C. have passed
D. will have passed
Grammar › View
Joey emptied the litter box __________he also gave the cat a bath.
A. or
B. but
C. and
D. nor
Grammar › ViewThey ___________ to the concert last night.
A. go
B. are going
C. went
D. have gone
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-ing verbs show…
A. something is happening or was happening
B. growth
C. past tense
D. a state of being