23. Each member country of WTO must ______ its laws and regulations and compete on the principle of fairness and co-operation.
| A．cater to | B．correspond to | C．relate to | D．submit to |
I was so familiar with her that I recognized her voice__________I picked up the phone.
| A．the moment | B．after |
| C．before | D．while |
It is almost five years__________ we saw each other last time.
| A．before | B．since | C．after | D．when |
There were dirty marks on her trousers __________she had wiped her hands.
| A．where | B．which | C．when | D．that |
The shop doesn’t open__________11 a.m.
| A．for | B．or | C．but | D．until |
__________ I accept that he is not perfect，I do actually like the person.
| A．While | B．Since | C．Before | D．Unless |