Though of taking too many risks, the climber continued his challenge.
| A．was accused | B．accusing | C．accused | D．to be accused |
It was not _____ she took off her glasses _____ I realized she was a famous film star.
| A．when , that | B．until , that | C．until , that | D．when , then |
Does ______ matter if he can’t finish the job on time?
| A．this | B．that | C．he | D．it |
I don’t think ____ possible to master a foreign language without much memory work.
| A．this | B．that | C．its | D．it |
Is ____ necessary to complete the design before National Day?
| A．this | B．that | C．it | D．he |
Was it during the Second World War_____ he died?
| A．that | B．while | C．in which | D．then |