.
Walter offered us a lift when he was leaving the office ，but our work__，we refused the offer．
| A．not being finished | B．not having finished |
| C．had not been finished | D．was not finished |
“I hope the dialogue,” said the spokesman, “______ between the two presidents next week will give us some active signals.
| A．making | B．to make | C．to be made | D．made |
This restaurant has an inviting, homelike atmosphere ___ many others are short of.
| A．where | B．when | C．that | D．what |
With our country entering an aging society, ______ the retirement age is probably unavoidable.
| A．having delayed | B．delaying | C．being delayed | D．to be delayed |
The new policy allows a couple to have a second birth _____either is an only child.
| A．though | B．if | C．unless | D．until |
Will was stupefied with exhaustion, and he _____ his head on the grass under one of the trees and slept, but he saw a cat acting strangely.
| A．should have lied | B．ought to have lay | C．might have laid | D．must have laid |