It is not profitable to provide bus services in districts where the population is widely _____.
| A．scattered | B．dismissed | C．separated | D．spread |
It suddenly occurred to him________he had left his keys in the office. (2012·江西，25)
| A．whether | B．where |
| C．which | D．that |
Jerry did not regret giving the comment but felt ________ he could have expressed it differently. (2012·北京，24)
| A．why | B．how |
| C．that | D．whether |
As many as five courses are provided，and you are free to choose ________ suits you best. (2012·陕西，20)
| A．whatever | B．whichever |
| C．whenever | D．wherever |
It doesn’t matter________you turn right or left at the crossing—both roads lead to the park. (2012·天津，9)
| A．whether | B．how |
| C．if | D．when |
I made a promise to myself________this year，my first year in high school，would be different.(2012·浙江，4)
| A．whether | B．what |
| C．that | D．how |