Вставьте слова в нужную форму conduct : discover : make : prove : invite : develop : invent : do : do

1 Radiation by Pierre and Marie Curie in 1900.
2 Experiments in the medical university every day.
3 An important discovery by Newton when he was resting under an apple tree.
4 The gravity theory many times so far.
5 The telephone in the 1870s.
6 New methods nowadays by teachers and lecturers to organise the studying process better.
7 A lot of research must to study side effects of new drugs.
8 Many tests and trials to prove safety of a new method.
9 People can to act as guinea pigs for medical experiment.

Hello, dear den! you ask me about my typical meals during the day. and idecided to write e letter for you.   every person has his own idea of a perfect house.i usually have two or three meals a day on weekdays and four meals on my day off. i don't often have an opportunity to have a dinner when i'm at school. my meals are: breakfast, lunch, dinner and supper or tea.some of my friends have a snack rather than a meal in the morning. but my breakfast is a full meal and i have it at 7 o'clock. it is usually bacon and eggs. afterwards come sandwiches with butter and cheese or sausages, or sometimes jam. then i drink tea or coffee.i have lunch at about 12 o'clock. it starts with fruit juice. then i have a vegetable salad and sandwiches again or pies with tea.dinner is at three or four o'clock. for dinner i have soup or borsch for starter, and meat or fish with a lot of vegetables for main course. for dessert i often have stewed fruit or jelly.and at last supper. it is at seven or eight. my mother usually cooks fried fish and mashed potatoes, beefsteak and omelette. and salads, of course. then i prefer a glass of warm milk with biscuits. sometimes before going to bed i drink orange juice or eat an apple. with best regards, your pen-friend!