No. A parent can give parental consent. A teacher can give teacher consent.
In most States you are no longer considered a minor when you are 18 so you are probably underage. If both parents give their consent then you can get married. If they refuse to give you consent then one more year isn't going to hurt you to wait to marry your boyfriend.
what did Alexander II refuse to give them? Answer this question…
Well common sense-wise, you give consent when the consequences for NOT doing so outweigh consequences FOR doing so. If you've not used or drank, there's no reason to refuse. But in some situations, Law Enforcement in some States can mandate you submit (consent), or they can take your license. So know your State Laws, know when it is legal to refuse, and what consequences attach to such refusal.
type of refuse
You can lose your license. Most jurisdictions run an implied consent in order to have a license, which means you lose it if you don't comply.
no the land lord cannot refuse to give receipt
There are some very specific things---in some states--where parental consent is not needed. In most situations, though, a parent is required to give consent when a minor legally cannot give his / her own consent.
consent on what subject
Anyone can refuse to give service.
Consent means to agree or give permission.
Yes, if she is under the age of 18. If the parents refuse to give consent, they could apply to the courts for a court order. The court might grant the consent if there is adequate evidence that they can raise the child and have the ability to support and take care of it.