Copy the table below. white the third person singular of the verbs: help, read, tidy, do, enjoy, walk, watch, have, wake up, play, go, finish. -s; -z; - iz.

1. The emergence of new technologies, including that using radioisotopes,
has made it possible to investigate transport of various minerals in the body.
2. People don’t typically consume adequate amounts of milk, especially those over middle age and older ones.
3. Calcium content in older people’s bones is typically lower than that found in bones of younger ones.
4. Percentage of potassium, chloride, and magnesium in milk is much lower than percentage of calcium and phosphorus.
5. Such minerals as calcium and phosphorus are known to be the most important ones for skeleton growth.
6. Milk is food both for the old people and the young ones.
7. Man puts in a lot of effort in manufacture of food both tasty and good for health. Such one as milk, however, is provided by nature itself.

1. Five big lakes in the north of the USA;
In the north-east of the USA there are the Great Lakes – Lake Huron, Lake Ontario, Lake Michigan, Lake Superior, Lake Erie
2. The largest city in the USA is New York.
3. The biggest river of the USA is the Mississippy.
4. The chain of mountains in the east of the USA is the Appalachian mountains.
5. The chain of mountains in the west of the USA is the Rocky mountains, or the Cordillera.
6. The biggest state of the USA is Alaska.
7. The capital of the USA is Washington DC.
8. The plains which are situated in the central part of USA are the Great Plains.