将一个三角形放在太阳光下,它所形成的投影的形状是________________ 发布时间:2017-05-08 21:03 │ 来源:www.tikuol.com 题型:填空题 问题: 将一个三角形放在太阳光下,它所形成的投影的形状是__________________.
题型:填空题 用方框内所给词的适当形式填空。my, his, her, your, itAlice: Excuse me, Mary. Is this 1.______ pen?Mary: No, 2.______ isn't. Ask Eric, I think it's 3.______ pen.Alice: Is this your pen, Eric?Eric: No, 4.______ pen is in my pencil case. Ask Jane. 5. ______ pen is lost. 查看答案