用所给单词的适当形式填空。

1. December is the ________ (twelve) month of a year.

2. As we all know, the silk dress feels ________ (soft).

3. She said to the twins, "Help ________ (you) to some fruit."

4. You should do your homework as ________ (careful) as your sister.

5. The foreign teacher gave us some ________ (advice) on how to learn English.

6. _______ (teach) high school students in a poor mountain village may not sound like fun to you.

放射性物品道路运输押运人员的职责范围主要包括三个方面，以下不属于其职责范围的是（）。

A.确保放射性物品一直处于其监管之下，防止被盗、丢失

B.监督放射性物品的装卸、堆放作业按规定要求进行

C.在车辆有故障时，维修车辆