Определите время глагола и поставьте 3 специальных вопроса к предложениям.
1) I have made some mistakes in this exercise.
a) Who
b)Were
c)How many
2) The doctor wisited his patients at home an hour ago.
a) When
b) Where
c)Whom
3) Human heart pumps blood through the body.
a)Where
b) What
c) What