_____ is known to us all that the 2012 Olympic Games will take place in London．
| A．It | B．Which | C．As | D．What |
They ______ so tired if they ______ for a whole day.
| A．wouldn’t feel, didn’t walk |
| B．wouldn’t feel, weren’t walking |
| C．wouldn’t be feeling, weren’t walking |
| D．wouldn’t be feeling, hadn’t been walking |
Do you consider it any good _____ the truck again ?
| A．to repair | B．repairing | C．repaired | D．being repairing |
If you find yourself ______ no one will help you, please call me.
| A．where | B．when | C．which | D．what |
— Why does the lake smell terrible?
— Because large quantities of water______.
| A．have polluted | B．is being polluted |
| C．has been polluted | D．have been polluted |
What you told me the other day is really true,_______?
| A．isn’t it | B．isn’t what | C．didn’t you | D．wasn’t it |