II. Open the brackets using 1 The theory of relativity ...
(to develop) by Albert Einstein.
2 Sand clocks
(to use) in the Middle Ages.
3 Yoghurt
(to make) from milk.
4 The stuff
(to instruct) by the manager.
5 The Great Pyramids...
(to visit) by thousands of tourists every year.
6 Volkswagens cars.
(to produce) in Germany.
III. Put the verbs in brackets into correct forms to make the First Conditional
1 If you
.. (to visit) me, I ( to show) you my new kitchen.
2 When Jane (to bring) me the book, I (to give) it to you.
3 If you ( to eat) the porridge, you
(to be) healthy an strong.
4 We (to start) the celebration, as soon as our father (to come).
