[ Grammar ]
Lager ___ about 150 years ago, and it is now the most popular style of beer.
a. has developed
b. was developed
c. has been developed

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A. mustn’t
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Grammar › View
What part of speech is the word ‘on’ in the sentence ‘The book is on the shelf’?
A. Preposition
B. Verb
C. Adjective
D. Noun