They came here for ayear哪里错了

They came here for ayear哪里错了 they came here for a year这句哪错了? Here is some milk .They're for you.哪里错了. i ___(记得)they once came here for dinner. I came here especially to ask you for advice.错在哪里? they came here an hour ago 改为同义句 they ___ ___ here for an ho They've made friends since they came to China这句话哪里错了? Here are some water for you?哪里错了 They are look for me 哪里错了?急 They each has a bag for sports.哪里错了 they came here as e__ students they came here last week.they__ ___ here since__ __.