We _______ them by three to two yesterday.

We must work hard to_____ a good knowledge of English.[ ]

When Xie Lei made progress in her study abroad, herparents encouraged her to ____.

下列各句中，没有语病的一句是

______ you go to Yundi’s piano concert (演奏会) with me this evening— I’d like to, but I have to do my homework.