读句子，填空。

1. I can't find _____________ toothbrush.

    _____________ toothbrush is lost.

2. She can't find _____________ teddy bear.

    _____________ teddy bear is lost.

3. They can't find _____________ car.

    _____________ car is lost.

4. _____________ can't find your key.

    _____________ key is lost.

图书借阅过期未还者按每天每册（）收取滞纳金。

A.0.1元

B.0.2

C.0.5元