Do you know our new manager— Yes. He _______ to be a friend of my brother’s.

ides have killed 1156 people innorthwest China’s Gansu Province so far, _____ the total deathnumber reported last week.

______ a lot of people moving to urban areas inthe last 20 years However, many migrants left their families behind

Our teachers often advise us ________ carefully in class.

When first to the market, these products enjoy great success.