1 When TO BUILD （build）our new school library hasn't been decided yet --------when + 動(dòng)詞不定式做主語(yǔ)2 He was told that the exhibition WOULD BE HELD （hold）the next week. ---------主句是過(guò)去...幫我翻譯個(gè)句子吧:Each piano was painted by an artist who lived in Canada but was born in one of the 41 counties.每一架鋼琴的畫都由一位畫家畫出，這些畫家都住在加拿大，但他們的出生地是四十一個(gè)不同的國(guó)家。