1. It is the the motor cortex that controls many movements of the human being.
2. It is during the systole that both ventricles of the heart contract.
3. It is on deep respiration that the vital capacity of the lungs may become 6 liters.
4. It was not until 1538 that Andreas Vesalius published his six-volume work "Tabulae Anatomicae."
1. The new methods of research hadn't been included into my work.
Had the new methods of research been included into my/your work?
2. The course of treatment hasn't been prolonged.
Has the course of treatment been prolonged?
3. The structure of the pancreas won't have been described in the new book.
Will the structure of the pancreas have been described in the new book?
1) I wrote my composition by the end of the lesson.
2) He sleeps several hours before his parents woke him up.
3) I enjoyed this film even though I saw it before.
4)My friend learnt Spanish for five years before he moved to Spain
5) Mary translated the text by 4 o'clock
6) She live(s) / live(d) in this town for five years
7)Pete watched TV all day before his friend invited him to go out
8) My friend play(s) / play(ed) chess for five years
9) .I presented her the flowers, which I .bought in the morning
10)He received a bad mark because he made a lot of mistakes
