weekendBobandhisfriendswenttoamountain．Whentheygotther...
问题详情： weekendBobandhisfriendswenttoamountain．Whentheygotthere，theyputuptheirtents(帐篷)andthenrodetheirhorsestotheforesttoseehowthetreesweregrowing．Intheafternoon，whentheyweregoingback，itstartedtosnow．T...