I don't think the experiment is _____ failure. At least we have got _____ experience for our future work on _____ nature.
It was in New Zealand ______ Elizabeth first met Mr.Smith.
Autumn coming, the leaves have ________turned into brown color.
catch the first bus, he got up very early this morning.
There was ______ time when everything to do with ______ nature could keep Anne spellbound.
Put the books back they belong after you have finished them.