6．Jack and Samantha ____________ for their wedding for a whole week but nothing is really done．
| A．have prepared | B．are prepared |
| C．have been preparing | D．prepared |
I, not you , _____ in the wrong. Not I but he _____been invited .
| A．were ; have | B．were ; has |
| C．was; has | D．was ; have |
The population of China is larger than ______ of any other country in the world.
| A．that | B．it | C．one | D．this |
Modern science has given clear evidence ______ smoking can lead to many diseases.
| A．what | B．which | C．that | D．where |
This is the first time that we ________a film in the cinema together as a family .
| A．see | B．had seen | C．saw | D．have seen |
He was told that it would be at least three more months ___________he could receover and return to work.
| A．when | B．before | C．since | D．that |