Mr. Gates is now ______ the company. If you have any questions, you can dial the number.
| A．in memory of | B．in place of | C．in charge of | D．in search of |
These natural parks are very important for preserving many animals, which would ______ run the risk of becoming extinct(灭绝的)．
| A．otherwise | B．other than | C．therefore | D．in another way |
The girl didn’t know who ______ for the broken vase.
| A．will be blamed | B．blamed | C．was to blame | D．blames |
______ with the size of the whole earth, the highest mountain does not seem high at all.
| A．When compared | B．While comparing |
| C．Compare | D．Comparing |
-- How long do you think it will be ______ the bus arrives here?
-- No more than five minutes.
| A．when | B．before | C．since | D．after |
Making a proper choice ______ the future will probably make much difference in our life.
| A．concerning | B．to concern | C．concerned | D．having concerned |