—Look! The man at the gate        be our headmaster. He stands there every morning.—No, it        be him. He is holding a meeting in the office now.

—Can we leave the classroom now?—No, you _________. You _________ to leave until the bell rings.

You really need to have a good rest．Remember：nothing ________make up for the loss of your health．

The doctors are doing all that they _____, but the old man is still not breathing properly.

To be honest, I would rather       my dog out, which made so many troubles.