The bottle is full__________water. Who has filled it __________water?
_____ of the students in our class _____ girls.
Don’t _____ your hands from the window when you are on a bus.
Maria has _____ trouble _____ math, so she often asks her math teacher for help.
Teachers should _____ their students to practice _____ English as much as possible.
China takes the leading position _____ space industry.