if your English is not good enough, you'd better use Chinese to talk with VO. Dm and Thin Vo's CHinese is superb. They wouldn't mind talking in CHinese. Of course, if your enlgish is gorgeous, you can take advantage of it and impress the Vo with good Enlgish. SOmetimes you can even mislead them with your fantastic English. hehe.
had it not been for the SARS, you might have had the chance to practice English at English corner in SISU (twice a week). Now u have to depend on yourself and find partners to talk with. Flinge528 & many others are to apply for visa in June, you might contact them and see whether you can arrange some time to rehearse. Good luck.