All of these sentences should end with a question mark...
Can you pick me up around 8p.m.
Is it too late to apply
How am I going to find the shop

All of these sentences could end with an exclamation...
I am scared
Really amazing
I can't believe it's not butter

Only one of these sentences could have an exclamation mark...
Where are my keys
I forgot to call
It was a cold, grey morning and the sun was slowly rising

None of these words should begin with the un- prefix...

appoint shape gain belief blaze

A subheading (aka short or key phrase) must always have end of sentence punctuation.

This sentence is wrong but it could be made right by placing the 'are' at the start...

Russian fighter planes are not as advanced as American?

This sentence could be made correct by moving the words around...

Stealth bombers often fly at night at low level.