30. They are shocked to find that in this town the traffic rules are not strictly ________.
– I see something lying in the corner, moving --- Let me see ________.
_______they say, just take your own way.
– Do you know you ______to be here by 7:30 ? --- Yes, I do.
There _____an old tree here. I wonder how they could manage to remove such an old tree.
– You seem to have learnt it by heart. --- Yes, I_________.