--Mary, have you got my email? I sent you a birthday card yesterday. ---Oh, really! I haven't ___my mailbox yet.
The Group of Eight (G8)________the eight richest countries in the world.
It is obvious to the students ______ they should get well prepared for their future.
I earn 50 dollars a week, _______ she earns 80 dollars.
— Mike, what did our monitor say just now? —Every student as well as teachers who are to visit the museum _____ asked to be at the school gate before 6:30 in the morning.
Studies show that people are more _____ to suffer from back problems if they always sit before computer screens for long hours.