Can anyone check my answer?
which sentence shows the correct verb mood usage?

it is essential that she wait in line.
if we wait now, we were next in line.
go be waiting in line.**
since we know about the sale, we were going to get here sooner.

Excerpt from the right decision lindsay rock telling a

What is the best way to manage oil transport on waterways? a. prevent oil spills and regulate the amount of oil that can be shipped at one time. b. use a skimmer, containment boom or chemical dispersant to clean up spilled oil. c. burn off oil spills from the water's surface when they occur.

Analysis that compares and contrasts the way two myths show one important feature of their culture