Modals of deduction and speculation

She __________pass the test so easily! I know that she didn`t learn the grammar.

My parents __________ have a marriage anniversary tomorrow! Tha date is in my calendar.

The population of China ___________ decrease (зменшитись) greatly due to the new law passed recently. But, noone is sure about it.

This flag is green, white and red.It _________ be Italy! I visited it a year ago and bought a T-shirt with its national colors.

The flag is red and blue. It _________ be the UK or the USA. Both countries` flags have these colours.

Look at this cowd! It _________ be a big city like New York.

We use _____________ when we are 90% sure that information is correct.

We can substitute (замінити) may with ____________________.

We use _____________ when we are 90% sure that something is not true.