200
The group collected Science data through careful ___________ of the experiment.
The security guard was very _________.
We require strict __________ of the rules.
How ________ is this bus?
_________ in maths is how often something happens.
Is your new bed ___________?
Are you sitting ___________?
The weather will be __________.
When they had come to the edge of the forest it was __________ growing light over the field.
It is ________ for some aeroplanes to fly inverted.
Pigs cannot ________ fly!