You will have a better chance _____ passing your exams if you work harder.
My mother has been a Chinese teacher ______ about twenty years
I want my mother to buy a pair of new shoes _____ me.
— , Li Feng? — It’s 7:50. The movie will start at 8:00.
Linda a cough for a week. She has to rest at home.
The students spent two hours their new project.