—Could you please tell Lucy that I want to talk to her? —Sure, I will tell her as soon as she _______ back.
I couldn’t wait _____ the box as soon as I received the gift.
_____ 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.