You can only be sure of_____you have at present;you cannot be sure of something_____you might get in the future.（）
| A． | that;what | B． | what;/ |
| C． | which;that | D． | /;that |
It is important to keep ________in an emergency.
| A．quiet |
| B．calm |
| C．silent |
| D．still |
So far，no organization has stood out ______the responsibility for the car bombing.
| A．offering |
| B．claiming |
| C．asking |
| D．making |
A flashing red light ______that a stretch of road was undergoing repairs.
| A．indicated |
| B．advised |
| C．connected |
| D．symbolized |
(2012年湖南安化高三月考，2)Jack recommended me a few foreign movies，but _______was to my taste.
| A．all |
| B．neither |
| C．some |
| D．none |
They promise that they will finish the project in a month，but I remain _______about their claim.
| A．optimistic |
| B．concerned |
| C．mysterious |
| D．skeptical |