Summer holiday is on it's way

the summer holiday is on the way! in summer holiday or on summer holiday Is it the last day of the summer holiday today? It is very hot in the summer.people dont like going out on s -It`s time to go.Is ___here?-No,Sam is still on the way. In China it's summer is from it's just the way it is ( ) the summer holiday 填in还是on ______（in,on,at）summer holiday Summer holiday is coming Do you want to go on a trip?该怎么回答? It's terrble that I didn't go anywhere this summer holiday.( Our summer holiday often___50 days.It's much longer than the