It is unnecessary to re-evaluate your goals once you've set them.
True
False

Yes its true.

Once we have set our goals , we should only aim at them

i think they are preparing for the battle of gaul. : )

i hope this you! : )

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."