Translation of "sometimes" into Latin

Sometimes I walk to work, and sometimes I ride my bike, because I live very close to work.

Aliquando ad officium ambulo, aliquando birota vehor. Valde prope officium habito.

Sometimes urgent appeals from other churches, threatened or stricken with violence and abuse, have reached this See of Rome.

Nonnunquam ad Sedem hanc Apostolicam instanter decurrerunt aliae Ecclesiae, minationibus affectae aut vi iniuriaque ictae.

Although you are able to win, sometimes yield to a friend; since through deference sweet friends are preserved

Vincere cum possis, interdum cede sodali; obsequio quoniam dulces retinentur amici.