20．Always read the label ______ you wash your clothes．
| A．before | B．unless | C．since | D．Until |
—Did your uncle phone you again the next day?
---No, it was a fortnight ___ he gave me a second call.
| A．that | B．when | C．before | D．since |
He has made another wonderful discovery,___ of great importance to science.
| A．who I think it | B．which I think it is | C．that I think is | D．which I think is |
—Minister, are you satified with the performance of the Chinese athletes in Beijing Olympics?
---Yes, it couldn't have been _____.
| A．worse | B．better | C．so bad | D．the worse |
---Do you live in Athens?
---No, we ___ it for the Olympics as well as holidays.
| A．just visit | B．have already visited | C．just visited | D．are just visiting |
.___ in her most beautiful skirt, the girl tried to make herself ___ at the party.
| A．Dressed; noticed | B．Dressing, noticed | C．Dressed, noticing | D．Dressed;being noticing |