The earth travels round the earth once every moth; ____ is known to everybody.
| A．as | B．it | C．which | D．this |
Many young people in the West are expected to leave____could be life’s most important decision-marriage-almost entirely up to luck．(2009．江苏)
| A．as |
| B．that |
| C．which |
| D．what |
The fact has worried many doctorsmore and more people died of cancer these years.
| A．what |
| B．which |
| C．that |
| D．though |
Part of the reason Charles Dickens loved his own novel, David Copperfield, was it was rather closely modeled on his own life. (2010 .北京)
| A．what |
| B．that |
| C．why |
| D．whether |
______ you said at the meeting describes a bright future for the company. (2013 .四川)
| A．When |
| B．How |
| C．What |
| D．That |
______ was most important to her, she told me, was her family.
| A．It |
| B．This |
| C．What |
| D．As |