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difficult

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theirs

A team cannot win if they do not have enough sleep.

Few players have succeeded in improving their sleep.

Professional footballers now do not enjoy parties.

Sleep is given more importance than it used to be.

The Advantages of Having Enough Sleep.

How Sleep Transformed Professional Football.

The Key to Success of Famous Football Teams.

Efforts to Improve Footballers' Physical Health.

The

three of

are

with

I asked Mark if he liked disco music in the 70s.

I asked Mark if you liked disco music in the 70s.

I asked Mark if he had liked disco music in the 70s.

I asked Mark did he like disco music in the 70s.

Ancient Egyptians believed to have been great doctors.

It was believed that ancient Egyptians are great doctors.

Ancient Egyptians believed that they were great doctors.

Ancient Egyptians are believed to have been great doctors.

beauty

beautifully

beautiful

beautify

Emily's two sisters are not sociable at all.

Compared with her two sisters, Emily is less sociable.

Emily is as sociable as one of her two sisters.

Of the three sisters, Emily is the most sociable.

might

must

will

can

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