问题
补全对话，情景问答
补全对话。
A: Mum, (1) ______ is my baseball?
B: Sorry, I don't (2) ______.Is it (3) ______?
A: No, my book is on the chair,but my baseball isn't.
B: Is it (4) ______?
A: No, there's nothing (没有任何东西) in my backpack.
B: Is it (5) ______?
A: Umm…Oh, yes! It's here! It's under my quilt (被).Thank you,Mum!
B: You're welcome.
答案
1. Where 2. know 3. on the chair 4. in your backpack 5. on the bed