You ________ wait for him. I’m not sure whether he’ll come back or not today.
_____ is not difficult to learn English well.
We can still do the work better with_____ time and______people.
-Shelly, it’s cold today!_______put on more clothes? -Ok.
It is said there are ______ of people in the city of Wenzhou.
Tu Youyou is famous ____ her medical research and won the Nobel Prize this year.