Whenever I met her, ____ was fairly often, she greeted me with a sweet smile.

He started to learn English in 1990 and in the years ________ he kept on using it in his work.

It's no good ________ here. Let's go home.

If we don’t start now, we must risk     the train.

_______ the ointment to the wound, the nurse carefully wrapped it up with a bandage.