There was so much noise that the speaker couldn’t make himself ___.

They ___ extensive and possibly dangerous actual flight training.

Weather ___, we’ll go out for a walk.

As activity carried ___ as one thinks fit in one’s spare time, leisure has several functions.

Long life is altering our society, of course, but in experiential ___.

They wrote a letter of thanks to ___ had helped them.

Even with the new development in research, only a tiny ___ of all tests are done without using animals.

It was a small place then compared to ___ it is now.

The person I spoke to ___ to be our new teacher.

It will ___ a futile attempt.