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Put the verbs in brackets in the correct tense (past simple or present perfect): 1)they (go) to the theatre last week 2)my cousin (be) to the theatre three times this week 3)his niece just (write) the invitation letters 4)helen (come) home, (have) a short rest, and then (begin) to help her mother your relatives (take part) in the demonstration yesterday? your parents (tell) you about the project today?