1. i arrived at the hospital at 7 p. m. 2. i arrived at the hospital at around 7 p. m. 3. i arrived at the hospital around 7 p. m. can we use all the expressions? can we use 'at around' as in sentence 3?

You could use some of the expression, but not all. In sentence 3 you should say, I arrived at the hospital about 7 p.mm and not around or between 7:15 and 7:35.

The right answer for the question that is being asked and shown above is that: "b.pahom wanted more land for himself so he could feel secure."these are the following choices: a.pahom wished for no more than to improve his family’s quality of life.b.pahom wanted more land for himself so he could feel secure.c. pahom wanted to his wife, who was never satisfied.d.pahom wanted to gain land and defeat the devil to avoid temptation.