A large number of students planting trees now, the number of the students 2000.
A good friend likes to do the same things ________ me.
----Why does your brother stay at home every day?-----Because he is young go to school.
He studies ______ at Chinese for one year, but he can still_______speak it.
Spring is coming.I feel like __________weight (减肥).
The scientists in China are trying __________ the ways to reduce the fog and haze (减少雾霾).