How long ____it ___to go there by train?
_____ you are familiar with the author’s ideas, try reading all the sections as quickly as you possibly can.
_____ 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.