阅读对话，用“in“on，选出正确单词。
1. A: I can see a cat.
B: It's ____ (in, on) the basket.
2. A: Where's the jacket?
B: It's ____ (in, on) the bed.
3. A: I can't find my pencil box.
B: It's ____ (in, on) the chair.
4. A: Is Helen ____ (in, on) the study?
B: Yes, she is.
5. A: Where's the camera?
B: It's ____ (in, op) the fridge.
