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

—Do you know （ ） they got to know each other? —It was last year （ ）they both taught Chinese in Scotland.

Our students are free to study （ ） interests them.

One of my brother’s many faults is that he never（ ） anything very long.

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

I didn’t hear （ ） because there was too much noise where I was sitting.

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

Jim was caught （ ） drugs into the country.

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

_____ the flood， the ship would have reached the destination on time.

_____ some more time, and I will find a solution to the problem.

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