Ex. iv. измените время в предложениях, используя наречия в скобках: 1.we have several lectures today (yesterday, tomorrow). 2. our doctors perform numerous experiments (last month, next week). 3. medical students take several credit tests at the end of the term (at the end of the last term, at the end of the next term).

1.We had several lectures yesterday. We will have several lectures tomorrow.
2.Our doctors performed numerous experiments last month.Our doctors will perform numerous experiments next week.
3.Medical students took several credit tests at the end of the last term.Medical students wil take several credit tests at the end of the next term.