Many people do not realize the importance of health __________ they have fallen ill.
| A．since | B．until | C．while | D．After |
The magazine___________ be Lily's, for we can find her name on the cover.
| A．may | B．might | C．could | D．must |
— Have you seen______ pen? I left one here this morning.
— Is it___________ black one? I think I saw it somewhere.
| A．the; the | B．a; a | C．the; a | D．a; the |
Harry Potter is so
interesting a book that lots of teenagers like to read _
| A．it | B．this | C．that | D．one |
— Could you please pass me the book?
| A．Yes, I could | B．No, I couldn't |
| C．Sure. Here you are | D．No, that's no problem |
—Merry Christmas!
—_______.
| A．I’m very happy | B．It’s very kind of you |
| C．Thanks. The same to you | D．My pleasure |