Taobo is Asia’s largest retail（零售的） network platform, ______ people can buy and sell many kinds of things．

By the end of last year, they _______ 2,000 English words.

The year 1949 _____the birth of a new country—the People’s Republic of China.

An old friend of my sister’s always helps my brother andwithEnglish.

I’ veusing plastic bags when shopping.– You’ re right. It’ s good for our environment.