Empezaron is the correct answer
The mystery of the island of Tökland
The verb that completes this sentence is sabe. Enrique sabe hablar italiano.
Answer:
1. H a b i a, 2.c e n s u r ó, 3.s a b i a, 4.m a n d o, 5.q u e r i a, 6.d e c i a n, 7.p i d i e r o n,
Explanation: