企业在市场竞争中要采用先进的生产技术,不断提高劳动生产率的原因在于
In the bookshop, a reader asked the shopkeeper _______ Who Moved My Cheese was an interesting book.
---What kind of volunteer work would you like to do?---I’d like to __________ sick kids in hospital.
Mary said that she __________ to Guangzhou.
The painting you drew is beautiful. But why not paint the walls ________ .
Students in their school ___________ trees on Tree Planting Day every year.