I am trying learn "modal verb"

my examples:

I can eat ice cream and walk a tightrope at the same time:)

They can ride a bike without using hands.

She will be able to drive a bus if she has a bus lisence.

I will able to climb Mount Everest if you ride carry me up to peak :) (for managed to)

İf i don't die i could love you forever:)

The police were able to aprehend the killer but they must investigate the family of the killer.    

I am trying to learn the "modal verbs"

my examples:

I can either eat ice cream and walk through a tightrope :)

They can ride a bike without using their hands.

She is able to drive a bus if she has a bus license.

I will be able to climb the Everst mountain if you help me to reach up to peak :) (for managed to)

İf I won't die I could love you forever:)

The polices are able to hand kiler but they must investigate to the family of killer.

I am trying learn "modal verb"

my examples:

I can either eat ice cream or walk a tightrope :)

They can ride a bike without using their hands.

She is able to drive a bus if she has a bus license. 

I will be able to climb Mount Everest if you ride me reach up to pike :) (for managed to)

I do not understand thé second hall of'this sentence. You can't get a ride to the top of Everest, which is called the peak.

İf I didn't die I could love you forever:)

The police able to hand kiler but they must investigate to family of killer. I don't understand this sentence either. Do you mean the police are able to arrest the killer but they also must investigate the killer's family?

I am trying learn "modal verb"

my examples:

I can either eat ice cream and walk a tightrope :)  I can both eat ice cream and walk a tightrope at the same time.

They can ride a bike while they do not use hands. They can ride a bike without using their hands.

She is able to drive a bus if she has a bus lisance. Good but 'license' not 'lisance'

I will able to climb Everst montain if you ride me reach up to pike :) (for managed to) I will be able to climb Everest. If you ride me you will reach the peak.

İf i won't die i could love you forever:) If I don't die I'll love you forever.

The polices able to hand kiler but they must investigate to family of killer.  The police caught the killer but they must investigate the family of the killer.