Question

5sentences on upto preposition of time

Answer 1

1. "He was here at five in the evening."
2. “I took notes during the meeting.”
3. “The store will open at eight o'clock.”
4. "We've had a lot of problems over / in the last few months."
5. “We waited for him from 2:30 to 3:30!”

Answer 2

there are some examples 
it is up to us to find a way out 
he spend up to two or three hours on net everyday
most of the big decision in the company are left up to him
an elephant can eat up 400 pound of food in one day
some peoples spend up to eight hours a day watching television 




.......................................................hope it helps u.............................................