It remains to be seen________North Korea will remain stable under its new young leader.
| A．when | B．whether |
| C．why | D．That |
—Please _________ the tigers. It’s dangerous to take photos with them.
—Oh, I see. Thank you.
| A．keep off | B．take off | C．get off | D．turn off |
—Have you decided where to spend your summer holiday?
—Not yet. We _________ go to Qingdao.
| A．must | B．should | C．need | D．may |
_____ people are waiting to watch the raising of the national flag at Tian’an Men Square.
| A．Hundred | B．Thousand | C．Two hundreds | D．Thousands of |
The new library building _____ last week.
| A．was completed | B．is completed | C．completed | D．has completed |
—Did you call Sara back?
—I didn’t need to, _____ we’ll have a meeting together tonight.
| A．though | B．unless | C．because | D．if |