Exercise5. Поставить глагол-сказуемое в соответствующее время: 1. Energy and building material of a body are supplied by many kinds of food.
2. Much attention must be paid to the nutritious value of foods in our country.
3. Bottling and canning are widely being used now to preserve vegetables and fruit.
4. Various effects of foods were studied by ancient Greek philosophers.
5. A great contribution to the food chemistry has already been made by our chemists.
I was ill and missed a few classes. I didn’t bother to ask my classmates what topic they were studying without me. I thought it was modal verbs. Naturally, I read the paragraph in the textbook on modal verbs. When I went to school (university) the teacher gave us a test on articles! I hadn’t expected it at all and got a bad mark. I was disappointed but I said to myself: the worse luck now, the better another time. And I was right! When we were given a test on modal verbs, I was the only one to get an excellent mark because I had been revising the topic longer than anyone in my group.