We didn’t go home _____ we finished the work.
Suffering from war, hunger and illness, many African children are ________ food, love and care.
There is a peaceful and calm ________ in the country, quite different from that of a big city.
---Where did you ________ our chemistry teacher?--- It was in the supermarket ________ I bought the moon cakes.
John is the only one of the students in our class that never ________ a mistake even when it is pointed out to him.
Only after leaving home ________ the true meaning of the proverb, “East or west, home is best.”