C.
Has been working.
Progressive means it would have started in the past, and has *progressed* to the present.
The world's smallest fish is a species found in Southeast Asia, known as Cyclopaedias prognosticate, which averages 7.9 mm for females.
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I'm pretty sure it's B. hope this helps, have an amazing day :)
The last one ! “it’s” means “it is” so it would be “it is time to wake up”
