The college education system should be reformed ______ it can follow the pace of the
economic development. 
| A．so long as | B．so that | C．only if | D．even though |
It will be less than a fortnight_______ we get to a turning point in our life.
| A．since | B．when | C．if | D．before |
I didn't meet her at the party yesterday. She___ _for Shanghai.
| A．might leave | B．must leave | C．can have left | D．may have left |
Not a single word_______ when _______about his late mother.
| A．he said, asked | B．did he say, asked |
| C．he said, asking | D．did he say, asking |
Han Han wrote several novels, almost all of them_______ by teenagers.
| A．appreciated | B．are appreciated | C．were appreciated | D．having appreciated |
I don’t like drinking milk. Please _______coffee for milk.
| A．replace | B．provide | C．serve | D．substitute |