_____sufficient historical and legal grounds, China's position on the South China Sea has been consistent and clear.
| A．Associated with | B．Based on |
| C．Centered around | D．Assessed by |
Experts insist that packets of cigarettes come with a health warning ______ to them.
| A．be attached | B．attach | C．attached | D．attaching |
— Tom, could you give me a hand in the following exam?
— ______ . Mom won’t allow me to do such crazy things.
| A．No problem | B．It's a pleasure | C．Forget it | D．My pleasure |
—The deadline is drawing, but I failed to challenge the task a third time.
— ______ my brother have a try?
| A．Will | B．May | C．Shall | D．Must |
—Have you ever been to Singapore?
— Yes, I ____ there 3 times in 2009 alone.
| A．have been | B．have gone | C．went | D．had gone |
— It is said that Tom is a wise manager in your company.
— Oh, no, he is ____ but a wise leader.
| A．anything | B．anyone | C．nothing | D．something |