[ Grammar and Idioms ]
What is the meaning of “catalyst” in the context of change?
A. A person or thing that accelerates change or action.
B. A person who stops a process.
C. A slow-moving event.
D. A predictable reaction.

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Prepositions › Viewcovered_______
A. with
B. for
C. in
D. from
Adjective › View
Did you see the magician? He was ___!
a.amazed
b.amazing
