2. 外语
  3. All that I have to do______to boot up my laptop and download more songs from iTunes.

All that I have to do______to boot up my laptop and download more songs from iTunes.

admin2015-08-26  77
问题 All that I have to do______to boot up my laptop and download more songs from iTunes.
选项 A、is
B、are
C、was
D、were
答案A
解析 主谓一致题。代词all作主语，表示物时，谓语动词应用单数形式；表示人时，谓语动词应用复数形式。that I have to do是定语从句，用来修饰先行词all，并不能影响主句谓语动词的单复数，但通过该定语从句的时态可知主句应用现在时，故选项[A]为答案。
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