In colloquial English 'them" would be acceptable
In formal English 'they' is used accompanied by the corresponding auxilliary verb
So, you could also say Is everyone who works in this store as helpful as they are ?
It helps the economy. Casinos bring people to the state which also brings in money. Food places and hotels are also built for the out of state people to stay in. It boosts the economy for that state
"I disagree. In my opinion, the first example is better than the second." would be the correct answer
A mechanical contraption screwed to the top shut it behind us quietly.
