Jim is eight-year-old boy. He spends half _____hour playing _____ piano every day.

Do you know ____________ the population of China is?—Yes, it has the __________ population in the world, about 1.3 billion.

Do you know the boy ___ is standing under the tree?– Yes, he is my friend, Peter.

_____ you ever _____ to Nanjing? —Yes, I _____ there last year.

It was a great trip, ______ we didn’t enjoy it ______ the beginning. [ ]