—Kelly, who’s the girl _____ glasses in the photo?—It’s me. I used to wear glasses and have long hair.
I will go to visit my aunt in England ______ the summer holiday starts.
The little boy is only six years old, _________ he can make wonderful model cars.
Please knock at the door ________ you come into the room.
A tourist will easily lose his way in Beijing ______ he has a map or a guide.
Be quick, ___we’ll be late for school.