Being constantly exposed to advertisements is annoying, but it ______ be pleasant sometimes.
| A．shall | B．need | C．can | D．must |
Mary is a newcomer. I suppose it will take her a long time to _______ herself to the new surroundings.
| A．adopt | B．devote | C．adapt | D．commit |
Thank you for giving me so much help. I _______in the experiment without your support.
| A．have failed | B．will fail | C．would have failed | D．must have failed |
One of the functions of _______UN is promote respect for human rights, making the world _______ better place.
| A．the; a | B．不填; the | C．不填; a | D．a; the |
—I'm afraid I must be off now.
—.
| A．No problem | B．Never mind | C．See you | D．It doesn't matter |
At the end of August, another serious quake in Sichuan , _______ has affected 500,000 people, happened about 30 km southeast of Panzhihua City, near the Sichuan-Yunnan border,
| A．that | B．where | C．which | D．What |