Question

she worked hard for her exam change into present perfect progressive​

Answer 1

Answer:

The given sentence is in past tense, the verb 'took' is a simple past tense verb.To change the sentence to present perfect continuous tense, the verb form.

Hope this helps you mate!

Answer 2

The astronomical unit is a unit of length, roughly the distance from Earth to the Sun and equal to about 150 million kilometres or ~8 light minutes. The actual distance varies by about 3% as Earth orbits the Sun, from a maximum to a minimum and back again once each year.