_______ in the regulations that you should not tell other people the password of your e-mail account.
| A．What is required |
| B．What requires |
| C．It is required |
| D．It requires |
What would have happened ______as far as the river bank ?
| A．Bob had walked farther | B．if Bob should walk farther |
| C．had Bob walked farther | D．if Bob walked farther |
Word comes ______free souvenirs will be given to _____comes first.
| A．what; no matter whom | B．that; whoever |
| C．which; whomever | D．that; no matter who |
If in wet sand, the vegetables can fresh for a long time.
| A．being buried；remain | B．buried；be remained |
| C．buried；remain | D．burying；remain |
There is no doubt ______ international cooperation is key to ______ with cybercrime, as Vinton Cerf has said that the problem of cybercrime is _______ huge that it requires UN to form a special agency to act as an international referee or steward.
| A．whether; doing; so | B．that; dealing; so |
| C．whether; dealing; such | D．that; doing; such |
--- Shall we go to Xufu Cultural Fair right away?
--- ______.
| A．It’s your opinion | B．I don’t mind |
| C．That’s your decision | D．It’s all up to you |