What are you going to do next weekend?—I _____ yet. Do you have any good ideas?

I don’t know whether he will come this morning. If he ____, I ____you— Thank you very much.

Mike likes to watch the birds _________ in the sky.

___How time flies!It’s already twelve o’clock.___ Oh,really? I ______ it at all.

Can you tell me why________? 　　 ——Because I want to help the people there.