A. What do the following refer to? 1. The other' (line 23): The other 2. them' (line 37):
3. which' (line 45):
B. 1. How was fresh air supplied to the diver inside the hard-hat suit?
2. How was unwanted air removed from the hard-hat suit?
3. What were the dangers to the diver inside the hard-hat suit? a) b) Cime rnt
4. Why are flippers worn by divers? 5. What enabled the divers to explore in cold water?
6. What are the parts of the scuba? 7. What is the main advantage of the scuba?
C. Mark the best choice. Which of the following statements is true?
a) Before the 15th century man wasn't able to stay underwater.
b) Although Siebe's diving suit was not successful, it opened the way for later
c) Da Vinci was the first to suggest the idea of supplying air to the diver from an air bag.
d) The idea of moving air around in the diving device belongs to an Italian.
please help me
verry verry improtant

Read the summary of the first three paragraphs of “the world on turtle’s back.”[1] in the beginning, there was no land, only the great ocean. [2] the sky-world, the home of the gods, was above the ocean. [3] a sacred tree stood at the center. [4] one of the gods pulled out some of its roots for his pregnant wife. [5] this created a hole in the floor of the sky-world. [6] the man's wife fell through the hole toward the ocean below, clutching the roots in her hand.which is the best way to combine sentences 4 and 5? a) one of the gods pulled out some of its roots for his pregnant wife, which created a hole in the floor of the sky-world.b) one of the gods pulled out some of its roots for his pregnant wife, he created a hole in the floor of the sky-world.c) one of the gods pulled out some of its roots for his pregnant wife which created a hole in the floor of the sky-world.d) one of the gods pulled out some of its roots for his pregnant wife he created a hole in the floor of the sky-world.