There were hundreds of problems.
The cellphone never had any problems inventing it as it did not invent anything.
There wer hundreds of problems, they are still overcoming some of them.
yes
A helicopter parent is a mother or father who hovers over their child like a helicopter. They are overly concerned with every aspect of their education and any problems they may have.
I don't believe there are airbags in any helicopter
yes
I don't believe any helicopter pilots have parachutes.
There isint any helicopter in stick rpg complete
A fast aeroplane will be faster than any helicopter, but a fast helicopter can be faster than a slow aeroplane.
I doubt that any helicopter can fly from Antarctica to Australia.
no
The Wright brothers did not have any help on inventing. They were on their own. They were even discouraged. They were not even supported.