______ a little earlier, you could have got a copy of his latest book.
| A．If you would arrive | B．If you arrived |
| C．Should you arrive | D．Had you arrived |
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 |
----He thinks that girls are smarter than boys when it comes to learning English.
----But two years ago he thought_______.
| A．so | B．otherwise | C．opposite | D．different |