Употребите глаголы в сковках в Present Perfect.
1) I don’t know this girl. I never (meet) her before. 2) “Where is Mother?”-“She just (go) out.” 3) “Don’t you know what the film is about?”-“No, I (not/see) it.” 4) Don’t worry about the letter. I already (post) it. 5) “Is he a good teacher?”-“Oh yes, he (help) me a lot.” 6) I know London perfectly well. I (be) there several times. 7) I can’t find my umbrella. I think, somebody (take) it by mistake. 8) “Do you speak Spanish?”-“No, I never (study) it.” 9) “Do you know where they have gone?”-“No, they (sell) their house and (not/leave) their new address.”