II. Choose the correct answer.

Tim: Hi! What 1) a) are you doing?

Alex: At the moment, I b) 'm waiting for the bus.

Tim: Can we meet in town?

Alex: Sorry, I can't. I 3) a) 'm going to the football ground. I 4) a) always help at the training sessions on Saturdays. Err... Oh no!

Tim: What? Are you OK?

Alex: Yeah, it's just that it 5) a) 's raining and I 6) b) 'm getting very wet. This bus is always late!