What _____ he want to ______?A, is, do B. do, be C. does, be D. do, do
––Would you mind _______ the music? Your grandpa is sleeping. ––Sorry. I’ll do it right away.
––_______ have you been a volunteer? ––Since three years ago.
He has been collecting coins _______ he was seven years old.
She is usually _______. Why did she get ill so suddenly?
Because of Project Hope (希望工程), _______ children have better lives.