Teach English, expected to include pet (7)
I believe the answer is:
educate
'teach' is the definition.
(to teach someone is to educate them)
'english expected to include pet' is the wordplay.
'english' becomes 'E' (abbreviation).
'expected' becomes 'due' (similar in meaning).
'to include' is an insertion indicator.
'pet' becomes 'cat' (cats are often kept as pets).
'due' placed around 'cat' is 'ducate'.
'e'+'ducate'='EDUCATE'
(Other definitions for educate that I've seen before include "Bring up" , "Impart learning" , "teaching style" , "Tutor" , "Teach - instruct" .)