---Who are you looking for? ---Mr White. ---Wait here for a while. The class meeting_______ over in half an hour.
_____ he works hard, I don’t mind when he finishes the experiment.
Antarctic _____ we know very little is covered with thick ice all the year round.
They decided to chase the cow away _____ it did more damage.
We often think of the days _____ we spent together on the island.
After supper she would sit down by the fire,sometimes for _____ an hour,thinking of her young and happy days.