--________ the population of Sichuan?--90 million people.
The little girl felt sad ________ her pet dog died.A. why B. because of C. because
-What’s your plan during the summer holiday?-I want to go on a _________ visit to Beijing.A. five-day B. five day C. five days
The NBA_____ in 1946. It has a history of over 60 years.A. came from B. came out C. came into being
—What a nice picture!—Thanks. It’s a photo ________ my family.
Welcome you _____ our school. They are my students.