The experiment has_________ the possibility of the existence of any life on that planet, but it does not mean there is no life on other planets.
Why not look up the new word in a dictionary _____ you don’t know it ?
Of the two lectures, the first was by far _____, partly because the speaker had such a dynamic style.
---It’s a lovely day, isn’t it? ---Yes. I love _____ when the weather is like this. Why don’t we sit outside and have our lunch?
In which play is _____ your brother appear?
It must be he that has stolen Mr. Smith’s purse, _____?