---What does Tu Youyou do? ---She has ___________ a scientist for over thirty years. A. played for B. worked as C. stayed with
It’s hard to keep the house with three kids.
Shanghai is one of__________ in China. A. the largest cities B the largest countries C. the most large cities D. the most largest countries
What’s your friend like?
They ______ the cat out for a walk now.
—easy work it is!—If you work harder, it’ll get .