Have you heard of Betty?–Of course, she is a lively child and_______with every one of us.

Is your father a doctor in No.2 Hospital?—No, he ___________ a farmer and now he is a driver.

Mr.Green, __________ you _________the Great Wall last Sunday?— No, but I’ll visit it next week.

The big bag is too heavy for the little boy ________. Who volunteers to help him?

China has _____ area of about 9,600,000 square kilometers, including Diaoyu Island(钓鱼岛) .