旅行前的准备（英文）在去国外旅行前都要做些什么~比如：I must get a passportI must buy a

I must buy food.
I mustcarry much money.
I must weare a pair of sports shoes.
I must need a backpack.
I must carry a cellphone.
I must tell other friends.
I must carry some water.
I must carry a map of this place.
I must carry some warm clothes.
I must carry an umbrella.
I must carry some mindicine.
I must carry a watch.
I must learn some infortation about this place.
I must buy some tickets.
I must learn some language of this place.