1. I'd say phosphorus was the key to the modern match.
2. It's difficult to choose between choice 1 and choice 4, but it's certainly more common than not to find a main idea in the first sentence of a paragraph, so I'll have to go with it took humans a long time to develop the match.
Answer:
B) my brother and i helped dad pitch the tents while mom prepared for dinner.
Explanation: There was no error
Explanation:
does my mother work in a bank?
Answer:
how i wish i could fly! state the kind of sentence
Explanation:
Optative sentence
