Why don’t people feel safe despite the incredible progress in medical science?
Почему люди не чувствуют себя в безопасности, несмотря на невероятный прогресс медицинской науки?

если нужно использовать только формулу " i  " , то:

i can build a farmhouse.

i can go across the bridge.

i can dig in the garden.

i can ride a horse.

1we  went  to the skating-rink  yesterday. 2 they  grew  even grapes in their orchard some years ago. 3  last week  they  hung  a new mirror in the bathroom. 4 we  had  a delicious dinner at a restaurant  last saturday. 5 she  laid  the table and invited her guests to have dinner. 6 they  heard  some strange sounds behind the door of the house. 7 tom  hid  behind the tree and  watched  the boys sitting by the fire. 8 the young archer  hit  the aim/target. 9 the students  held  a meeting on friday. 10  he  fell  down and  hurt  his leg. 11 their granny  kept  a cow and some rabbits on the farm. 12 she  knew  very well that  boy who lived next door to them.  13 he  knew  a lot of poems by heart. 

1. biggest

2. more sociable

3. more curious

4. better

5. cleverest

6. more beuatuful