English is a language shared by several diverse cultures, ________ uses it differently.
| A．all of which | B．each of them |
| C．all of them | D．each of which |
It is the third time that she has won the race, ______ has surprised us all．
| A．that | B．where | C．which | D．what |
Sit down, Emma．You will only make yourself more tired,________on your feet．
| A．to keep | B．keeping |
| C．having kept | D．to have kept |
We __________back in the hotel now if you didn’t lose the map．
| A．are | B．were |
| C．would be | D．will be |
Nowadays people become more and more practical and buy only ____they need．
| A．where | B．which | C．when | D．what |
Don’t handle the vase as if it ____ made of steel．
| A．were | B．is |
| C．has been | D．had been |