Do you have enough students to carry the boxes—No, I think we need students.

Onlywhenonelosesfreedom _______itsvalue .

Excuse me, Mum. When can we have dinner—Not until it in half an hour.

All of us had a good time in the picnic last Sunday.Pity you weren’t there.—I really ________ come but I was looking after my mother in hospital.[ ]

When we sleep isculturalas biological-and practices differ greatly round the globe.