number one is Choice d . number two is Choice C . number three is Choice a . number four is Choice a
A ..........is the answer
I might not be 100℅ right. But possibly Establish or Orginate for found.
And i couldnt find very strong words for come back, but returned. As for working outside is unknown for me. Hope this helps!
C. either a or b
You can't just slam on the break on a motorcycle because you could go flying off. And on a motorcycle you have no walls or airbags to protect you.
<span>B. nonrestrictive clause
Since it is nonrestrictive, it is not necessary and is set off by commas.
Hope this helps :)</span>