据说一只海怪生活在这片深水区。

A sea ___monster is said to live in these deep waters.

在电影里，怪物史迪奇成为了莉罗最好的朋友。

In the movie, the ___monster Stitch becomes Lilo's best friend.

这个故事描述了一个住在孩子床下的可怕怪物。

The story described a scary ___monster that lived under the child's bed.