题目内容：

根据句意，用所给单词的适当形式填空。

1.They’ve reached an _____________ on how to share the kitchen. (agree)

2.Doctors are ______________ about the cause of the disease, so it will be a long time before they can cure it. (sure)

3.Apple Corporation’s _______________ are very popular all over the world. (produce).

4.The long journey on bus may be______________, but you can enjoy the nice views along the road. (comfort)

5.The bird ________________ its wings and flew away. (spread)