Раскрыть скобки в активный или пассивную конструкцию:
1) This text (to translate) at the last lesson
2) I (to ask) the teacher to help me
3) Many houses (to burn) during the Great Fire of London
4) I often (to send letters to my friend)
5) My friens (to help) me in Maths
6) These trees (to plant) last summer

This text was translated at the last lessonI asked the teacher to help meMany houses burnt during the Great Fire of LondonI often send letters to my friendMy friend helps me in Math"These trees were planted last summer