Give the correct forms of the verbs in brackets
1) When you (to enter) the institute
2) I (to work) in the anatomy theatre tomorrow
3) The skeleton (to support) and (to protect) viscera
4) Cells to bethe simplest elements of the human body
5) The risperatory sistem (to provide) the body with oxygen
6) We (to study ) the structure of the human body at the anatomy class yesterday
Всем большое спасибо заранее!