Complete the sentences with the simple past or past perfect form of the verbs in brackets
By the time they ______________________ (get) home from school, their
favourite TV show _____________________ (finish).

She ________________ (work) here for three month before she ___________
any new friends.

The children ______________ (learn) how to read before they ___________
(be) five years old.

By the time her pizza finally__________ (come) she_________________ (eat) dessert.