I got so tired that I just couldn’t move a step _____.

The degree （ ） you maintain your mental health may depend on certain simple environmental factors.

There was nothing we could do _____ wait at that moment.

Jim was caught （ ） drugs into the country.

Not until quite recently _____ any idea of what a guided rocket is like.

Tom might not have made such a serious mistake if he _____ your advice.

The teacher’s lecture on American history was three hours long, and Mary felt very （ ）.

Once you arrive in a new place, you’d better （ ） the local custom.

When we have dinner very late we don’t wash up （ ） the next morning.

Greatly agitated, I rushed to the apartment and tried the door, （ ） to find it locked.

These tickets for the performance are （ ） until the end of the month．

We didn’t finish the work in time. You _____ us since you were there.