11. Complete.

Решение:

1. Clarissa: don't we go canoeing tomorrow?
2. Tomas: I don't want to. That sounds like fun.
3. Clarissa: Great. Why shall we meet in the afternoon?
4. Tomas: Hmm. I'm not sure. There are lots of people at the lake in the afternoon.
5. Clarissa: Oh, OK. So, let's go in the morning. Shall we walk there?
6. Tomas: No, yes, let's. Let's take the bus.