The art club is for members only. You can’t go in ____ you are a member.
| A．unless | B．because | C．if | D．though |
—What do you think of the four classics (名著) of China?
—They are wonderful, but I’ve read ______ of them.
| A．both | B．none |
| C．neither | D．all |
—Would you like to go and see Monsters University (《怪兽大学》) with me tonight?
—I’d love to, but I ______ it twice.
| A．see | B．will see |
| C．have seen | D．am seeing |
There are ______ stars in the Galaxy. We can’t count them.
| A．billion of | B．billions |
| C．billions of | D．billion |
—Oh, Jack, your MP4 player looks nice. Is it new?
—No. I ______ it for two years.
| A．am having | B．bought |
| C．have had | D．have bought |
—Li Lei isn’t in the classroom. Where is he?
—He ______ to the teacher’s office.
| A．is going | B．has gone |
| C．has been | D．will go |