This document appears to be an English grammar worksheet from Escola Básica dos 2o e 3o Ciclos Bartolomeu Perestrelo for the 2006/2007 school year. The worksheet contains multiple grammar exercises practicing the use of past tense verbs, including identifying past tense verb pairs, matching base verbs with their past tense forms, filling in blanks with past tense verbs, rewriting sentences in the interrogative form, and describing what someone did or did not do in the past tense.