Consider the subject and object — The subject is 'I,' and the object is 'you'. the Direct Object Pronoun is 'te'!
Same story as before. Subject, verb, object. 'Nos.'
This one depends on the grammatical gender of the noun! 'Bicicleta', the most common translation for 'bicycle,' is feminine. So I would go with the feminine DOP, 'la!'
Again, depending on the gender, it could be either. Cookies could be galletas, so I might say 'la.'
The default, genderless DOP is 'lo'. So 'it' usually translates as 'lo,' unless it's specifically referring to a noun that is known to be feminine. So without any other information, here, I would say 'lo.'