I have_____(吃) my breakfast already为什么用had,不用eaten?

I have_____(吃) my breakfast already为什么用had,不用eaten? ---Ross,Can I use your computer to do my homework?---Sorry,I don't have_____ 每天我都和朋友们进行篮球训练 I have_____ _____with my friends every day. I don't have_____ homework today.(many) -Have some oranges,please.-No,thanks.I've just have_____.They're a little bit sour.A.them B.it C.one D.none正确答案的确是C，但是既然是吃了一个，后面为什么还是they're啊？ 英语语法(现在完成时)2．—Where have you _______ these days?—I have_____ to Dazhu with my friends．（重庆市） A．been；gone B．been；been C．gone；been D．gone；gone Cl-Cl Br-Br I-I键长多少 怎么检验CL- Br- I-? I have_____(a)uncle.but I don't have have ___(some)aunts Could I have_____? A.some bread B.some breads C.any bread D.any breads I have_____ book.That's_____English book. She is only______one-year-old girl! I don't have a ping-pong ball.Does your brother have_____? The bread looks nice .I want to have_____.A.them B.it C.they D.this Do you have_____(some) snacks?Can I eat _____(some) snaks? Br Do you have ____(一些）pet dogs?no,I don't.but I have_____(一些）pet cats. no matter how the others say,what they do,i don't care.now,i just want to study hard for my br Cl- ：（Br- .I- )Cl2I 2酚类醛类烯.炔