They must make there double bed slowly at university for a year

How must they make their double bed at university for?

Where did they make their double bed slowly yesterday?

Their make their double bed at university yesterday

They are going to make their double bed slowly at university for a year

When are they going to make their double bed slowly at university?

 They have made their double bed slowly at university

How long have they made double bad slowly at university today?

They make their double bed slowly at university today