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 |
When we get closer to the moon, we shall feel its gravity pulling us, but it will not be ________ the earth’s.
| A．as a strong pull as | B．a pull as strong as | C．as strong a pull as | D．as strong pull as |
Why______you do everything as if you have to win?
| A．must | B．can | C．need | D．shall |
–Try not to work yourself too hard. Take it easy.
–Thanks. _______.
| A．No way | B．So what? | C．You too | D．What for? |
Mr. Smith is always on time for everything. How ________ it be that he was late for the flight?
| A．can | B．must | C．may | D．need |
the newspaper carefully ,and we’ll find different types of articles on the pages
| A．Read | B．Reading | C．To read | D．Having read |