18．After you have used the dictionary，please just put it back_________it belongs．
| A．to whom | B．to which | C．what | D．Where |
If it yesterday, we could play football on the sports ground now.
| A．didn’t snow |
| B．hasn’t snowed |
| C．hadn’t snowed |
| D．weren’t snowing |
--- Would you have called her up had it been possible?
--- Yes, but I busy doing my homework
| A．was |
| B．were |
| C．had been |
| D．would be |
Jane would never have gone to the party that Mary would come to see her.
| A．has she known |
| B．had she known |
| C．if she know |
| D．if she has known |
Without electricity, human life quite different today.
| A．is |
| B．will be |
| C．would have been |
| D．would be |
It is high time we home.
| A．will go |
| B．would go |
| C．have gone |
| D．went |