The answer is b. Simple past
The proposition here is - in. <span>A </span>preposition<span> is a word such as after, in, to, on, and with. </span>Prepositions<span> are usually used in front of nouns or pronouns and they show the relationship between the noun or pronoun and other words in a sentence.</span>
The question doesn't have enough info to answer
Answer:
the events that caused curle to discover two elements
Explanation:
O.K is an abbreviation for okay, which is also said as 'oh-kay'
