If it _________ not for all the cars and passers-by with cameras, you _________ think you have magically traveled back to the 14 century.
—Can I call you back at two o’clock this afternoon? —I’m sorry, but by then I______ to Beijing. How about five?
--- Why do you want the book? ---- _________, sir.
Her husband was _____ to make a fortune, but finally failed.
______he came back ______the truth.
The boy wanted to ride his bicycle in the street, but his mother told him_________.