25.After studying chemistry for years, I can only say I have ___ general knowledge of this subject.
| A．/ | B．a little | C．a | D．Some |
People all over the world are kept _______ of what is happening at once by means of the Internet.
| A．suspected | B．convinced | C．approved | D．informed |
——Is Jenny coming to the exchange meeting?
——_______. She may not have time.
| A．Up to you | B．Sure | C．I guess so | D．It depends |
Take the note as a reminder_________ you forget to buy some sweets for the kids while shopping there.
| A．so that | B．even if | C．in case | D．as if |
The 13:30 train to Shanghai has been put off __________ the heavy storm.
| A．due to | B．in case of | C．aside from | D．except for |
You cannot take back your words _________ they are out of your mouth.
| A．before | B．whether | C．once | D．while |