The Mekong River, which________ severalcountries in Southeast Asia, ______to be playing a significant role in the region.

“The last one ____ will pay for the meal.” —“Agreed!”

In India,about_____ of people live in the country and some of them live a very poor life.

1 am looking forward to the day ________ my daughter can read this book and know my feelings for her.

Although the country as _____ whole is fairly wealthy, many people in the countryside live in ______ poverty.