.
— When did they come back last night?
— It was midnight ____ all of us were sleeping.
| A．that | B．when | C．which | D．in which |
As you know, the output of cars in 2010 is five times _______ it was in 2000 in the factories across our country.
| A．which |
| B．that |
| C．how |
| D．what |
_______ medical issues, we also have to face moral and legal issues when cloning human beings.
| A．Regardless of |
| B．As a result of |
| C．In addition to |
| D．Except for |
The top leaders of the two countries are holding talks in a friendly
_______ .
| A．atmosphere |
| B．state |
| C．situation |
| D．phenomenon |
The suggestion that the headmasterthe prizes was welcomed by every student.
| A．presented |
| B．present |
| C．presents |
| D．would present |
Afterthe beautiful vase on the table carefully, he himself
on the floor.
| A．lying; lied |
| B．laying; lay |
| C．laying; laid |
| D．lying; laid |