(Note that almost all verbs in English can be either transitive or intransitive.)
1. "Look into" is transitive here. The direct obj. is "that." This is an inseparable verb; you can't say, for example, "We should look that into." 2. "Go over" is transitive here. The dir. obj. is "this." This is inseparable; you can't say, for example, "Can you go this over for me?" 3. "Look