—Do you ______ the idea of living a low-carbon life?—It sounds tough, but it is a tendency.
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.
---You’ve finished off two pizzas! ---Yes. But the second is ___________ little bit small, so may I have __________ third one?