They're installing a new door to make the building (a)   to disabled people.

Finding a cure for malaria is a goal that is (a)   within our lifetime.

Doctors are working hard to protect the population against (a)   diseases.

It's extremely dirty—you should wear (a)   gloves when you clean it.

I only use (a)   batteries because I think the other ones are wasteful.

Is your uniform (a)   or does it have to be dry-cleaned?

The berries of that plant are (a)   —they taste really delicious.

The trip to Iceland was the most (a)   vacation in my life.

The lecturer spoke so quietly that he was scarcely (a)   at the back of the hall.