Complete the sentences with the verbs in the past simple or the present perfect. example: i (not / do ) my homework yet.-i haven't done my homework yet. 1) you (be) to london? -yes, i .. (be) there last summer. 2) / fly) a kite. 3) the tourist (just/cross) the square. 4) they (cross) the street, (turn) to the lleft,and (see) the boat. 5) we are very tired. /clean) the house. 6) the students ( visit) the science museum yesterday.they (spend) science night in the museum. я вас мне !