__________ experts’ opinions,they gave up the experiment immediately.[ ]

31．After I became the manager, few occasions could I find________I have the time to sit down and enjoy a quiet dinner with my wife

I have had such a case_________a boywhispered to his classmate now and then while I was having lessons.

The manager requested that no one________of his decision until the next meeting.[ ]

It’s not the whole nation rose up and drove the enemy out of their homeland.