No one can say for sure when man(0) learnt the use of fire for the first time. __________(1) (glance) at the graph of human ___________(2) (develop) though, it can _________(3) (speculate) that he ______ (4)( may encounter) the benefits of fire by chance. Probably, a part of forest must have been on fire due to lightning. With his intelligence, he _________(6) (understand) that fire _______(7) (has) immense benefits. He ______ (8) (realise) that it _______ (9) (use) _________ (10) (protect) himself from the wild animals.
Answer:
1 glanced
2developed
3speculated
4 had encounter
6understood
7had
8realised
9use
10 to protect.
Explanation:
I hope it is useful
Answer: 1. glances 2. developing 3. spectulating 4. can encounter 5. understands 6. will have 7. realised 8.’used to 9. protected
Explanation: