Ответ:

Let's swim in the sea. - It's a bad idea

Let's catch a fish. - I don't know

Let's draw a picture. - It's a good idea

Let's take a photo. - It's a bad idea

Let's collect shells. - I don't know

Let's eat ice cream. - It's a good idea

Let's build a sandcastle. - It's a bad idea

Объяснение: