Singular or plural

What are is your symptoms

Maintenance to walls is or are needed

The death of south african soldiers has or have been a shock

There is or are nothing wrong with the cars

Where is are your keys

The public has or have spoken

The rest of the world hasn't or haven't figured it out yet

The claim for damages is or are unfounded

There are is some red faces

Are your cars sold

One of my favorite channels is or are

My noodles is or are a bit on the spicy side

There is or are enough taxpayers

Are or is south Africa's forensics so poor

There is a lot or are a lot of them

Then there are is the amount of gears

When there were many other options available

If he was or were to be granted bail

There is or are only scrapped Airplanes here

Here is or are civilians here

There is or are little flakes

Here you can see there are special circumstances

some of them is or are

There is or are some weather changes

Numbers eg 5 is or are

None of the lecturers are helpful

"there is many ways to skin a cat or there are many ways".

There are or there is talks

His life were was worlds apart

the construction of power stations is

Please help with above and the rules which apply