The first textbooks _____ for teaching English as a foreign language came out in the 16th century.
A healthy life is frequently thought to be ___ with the open countryside and home grown food.
This is Mr. White, ______ I think has something interesting to tell you.
Next winter, ______ you will spend in Harbin, I’m sure, will be another exciting holiday.
One of the advantages of living on the top of a highrise is that you can get a good _____.
He always did well at school _________ having to do part-time jobs every now and then.