It was difficult being in a foreign country, ________ if you don’t speak the language.

Running a company is not ______ a matter of hiring people—they also need to be trained.

As is known to all language learners, the newly learnt words will soon be forgotten unless______ used in everyday communication.

If I were _________ younger, I would do ___________ I am interested in.

She devoted herself ______ to her research and it earned her agood reputation in her field.