Помогите с английским :

Complete the tag questions and negative questions with an appropriate form of the verbs In parentheses. Some will be affirmative; some will be negative.
Заполните вопросы тегов и отрицательные вопросы с соответствующей формой глаголов в скобках. Некоторые будут утвердительными; некоторые будут отрицательными.

1. Было - (be) the population of China over a billion?
Стало - Isn't the population of China over a billion?

2. China (be) the largest Asian country, isn't it ?
3.________ the Yangtze Delta usually (produce) 25 percent of China's rise crop? 4. _______ the Chinese now (plant) millions of these to stop erosion?
5.China (export) a lot of fish, doesn't it?
6.Beijing _______ always (be) the capital of China, has it?
7.Marco Polo (visit) Beijing, didn‘t he?
8.______Kublai Khan (name) Beijing Dadu a long time ago?
9. The Chinese language (use) an alphabet, does it?
10.________people (speak) different dialects today in China?