There must be two dogs.They are barking noisily in the street.（合并为一句）

题目

There must be two dogs.They are barking noisily in the street.（合并为一句）
There ____ ____ two dogs ____ noisily in the street.

答案

There must be two dogs.They are barking noisily in the street.（合并为一句）
There （must be） two dogs （barking） noisily in the street.
在街上一定有两条狗在大声叫.