The price of the phone ________ what kind it is.
—How do you like Beijing, Miss Read?—I’ve no idea. I _____ there.
—Where are Maria and Kangkang?—They _____ England.
—Have you found your lost book_____?—No, I haven’t.
The _____ population has caused many serious problems.
— What did he say just now?— He asked me ________.A. when my sister came backB. when did my sister come backC. When my sister will come back