Teenagers ________ their health because they play computer games too much.
According to the research, the higher the standard of living, the ___________.
We have got everything ready at once, with our guests _________ to come in ten minutes.
However much ___________, it will be worth it.
His success in his career was due to his determination __________ what seemed impossible.
You can get the best result ________ you carry out the experiment under the desired conditions.