It's Sunday. Simon, David and their mum are in the park. They're going to have a picnic.
Simon: I'm now. are we going to eat, Mum?
Mum: At eleven thirty. We still have some time to go.
Look! There are some ducks on the pond.
Simon: They're lovely.
David: Hey! There are black in the sky. It's going to soon.
Simon: I don't think so. It's a fine day. Let's go.
Thirty minutes later...
Mum: Time for picnic now. Let's sit this big tree.
Simon: Oh, dear! It's now.
Mum: It's dry (干的) over there. Run, boys!
David: Oh no, look at the ducks! They're our sandwiches.
Mum: I think we need to go and for a restaurant nearby.