1. nosotros / a mi abuela / enviar (to send) regalos / para su cumpleaños (birthday) 2. tú / nunca / prestar / a mí / dinero 3. mi madre / preparar / a nosotros / una cena (dinner) especial

1. Nosotros le enviamos regalos a mi abuela para su cumpleaños.

2. Tú nunca me prestaste dinero.

3. Mi madre nos prepara una cena especial.

Explanation:

The unstressed personal pronouns are those that function as a direct or indirect complement (I have already told you: "te" OI "lo" OD) or as part of the pronominal verbs: “me arrepiento”.

The forms of singular me and te and those of plural nos and you are used without distinction of gender, and the same as a direct rather than indirect complement, so it is necessary to be able to distinguish when they are one and when another, attend not only to the nature of the verb, but also, in most cases, to the context.

they need to keep water moving over their gills so they seem to have active periods and restful periods instead of undergoing deep  sleep.  they sleep swim

explanation: