---Dear me! What a wonderful computer!
---My grandpa bought it for my sister and me. It’s ______.
| A．mine | B．hers | C．theirs | D．ours |
You _____ lose your way if you walk alone in the mountains at night.
| A．may | B．need | C．should | D．ought to |
We didn’t start our discussion _____ everybody arrived.
| A．since | B．if | C．while | D．until |
Take the exam carefully, _____ you won’t get full marks.
| A．but | B．and | C．or | D．so |
We hope that with the help of the new skill, Liu Xiang can run _____ than before.
| A．fast | B．faster | C．fastest | D．the fastest |
The students from Xinjiang enjoy staying in our school because everyone is _____ to them.
| A．friendly | B．gently | C．happily | D．politely |