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        1. The talented boy _________ write lyrics when he was at the age of ten.
          A. may                      B. could                   C. must
          B
          考查情態(tài)動(dòng)詞。根據(jù)when引導(dǎo)的時(shí)間狀語(yǔ)從句可知,應(yīng)該用一般過(guò)去時(shí)。May的過(guò)去時(shí)是might;can的過(guò)去時(shí)是could。句意“那個(gè)有天賦的男孩10歲就可以寫(xiě)歌詞了!惫蔬xB。
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