Explanation:
Hail Stones:- Hail is a form of solid precipitation. It is distinct from ice pellets, though the two are often confused. It consists of balls or irregular lumps of ice, each of which is called a hailstone.
Arrows:- An arrow is a fin-stabilized projectile that is launched via a bow, and usually consists of a long straight stiff shaft with stabilizers called fletchings, as well as a weighty (and usually sharp and pointed) arrowhead attached to the front end, and a slot at the rear end called the nock for engaging the bowstring.
Answer:
1. who
2. who
3. That
4. who
5. That
6. who
7. that
8. who
9. who
10. that
11. which
12. who
13. that
1. The man wearing sunglasses THAT works in a restaurant.
2. My mother made a delicious ice cream, WHICH I ate all by myself.
3. Paul is reading a book THAT is very interesting.
4. Pizza is a popular food THAT was first made in Italy.
5. Albert Einstein was a scientist WHO did many important things.
6. This is the book WHICH wasn't available in the library.
7. This is the CD THAT I've played hundreds of times.
8. I've never net the man WHO helped me this morning.
9. I hate the music THAT is too loud.
10. Can you pass me the pen? THAT is next to the dictionary.
Explanation:
"who" when referring to people.
"That" when referring to objects, non humans.
There are many factors involved in the improvement in the life expectancy such as sanitation, housing, scientific research to cure many diseases and infections, education etc.
Historically it was the nineteenth and early twentieth century when all these improvements were made due to which the mortality rate decreased intensively in early and middle ages.
False, whom is another form of who. The writer should use which for an object.
