The sentence "We were really into seeing that new show." is an example of informal language. To determine this, you can look for informal phrases or slang words, which are typically more common in casual conversations rather than formal writing. In this sentence, the use of "really" and "into" suggests a more relaxed and informal tone. The other sentences do not contain any informal language and are suitable for formal or professional contexts.
The sentence "We were really into seeing that new show." is an example of informal language.
