Mr. Bush is on time for everything. How________it be that he was late for the opening ceremony?
| A．can |
| B．should |
| C．may |
| D．must |
. Cindy shut the door heavily and burst into tears .No one in the office knew_________ she was so angry.
| A．where | B．whether | C．that | D．why |
. We should respect food and think about the people who don’t have we have here and treat food nicely.
| A．that | B．which | C．what | D．whether |
（北京卷33）. some people regard as a drawback is seen as a plus by many others.
| A．Whether | B．What | C．That | D．How |
（北京卷32）. Part of the reason Charles Dickens loved his own novel, David Copperfield, was__ it was rather closely modeled on his own life.
| A．what | B．that | C．why | D．whether |
（北京卷31）. I want to be liked and loved for I am inside.
| A．who | B．where | C．what | D．how |