What's wrong with this sentence ? . . .

" Let's check out their calender. "

When i was four years old, my dad and i a tree in our front yard. it was a tiny, fragile sapling. he promised me that it would grow tall and strong, but he said that i had to be patient. until i turned 18 years old, dad and i it every year on my birthday. choose the words that correctly fill in the blanks.

What is the main idea of this paragraph from the volcanoes section of the ready. gov website

Sa iyong palagay mahalaga ba ang panukala ni pilosopo tasyo hinggit sa panghuli ng kulog. dapat ba siyang pakinggan ng mga autoridad? bakit?