They will never reconcile themselves to____.

You’d better let me know as soon as there is a(n)____position in the branch office.

Urban congestion would greatly be relieved if the____charged on public transport were more reasonable.

We are convinced____ the righteousness of our cause.

According to the acoustics, continual exposure____ noise of high intensity would lead to loss of hearing.

The physicists propose that our attention____the use of special methods of thinking and acting.

Animal mothers are devoted to their young and____ them with love and discipline.

“The president made a brilliant decision, didn’t he?”

“Yes, he did. I don’t know what I would have done if I____to make that decision.”

To meet the ever increasing demand____oil-refining equipment, the company will produce more of such equipment.

In selecting a material, the engineer’s interest is in its properties，which determine how it will perform under the loads and condition____it is subject.