I’ll him off this time but next time he’ll be punished.[ ]

No one knows how the huge rocks _______ and _______ without our modern machines eight hundred years ago.

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

The man______ you talked just now is a worker[ ]

Modern China is experiencing a completely new period ________ respect for science and creativityhas become the guiding principle of society[ ]