问题
选择题
While ______ out of the window, I saw my father growing some vegetables in the garden.
A．look
B．looks
C．looking
D．looked
答案
答案：C
考查非谓语动词。逻辑主语I与look之间为主动关系，故用现在分词，选C。
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While ______ out of the window, I saw my father growing some vegetables in the garden.
A．look
B．looks
C．looking
D．looked
答案：C
考查非谓语动词。逻辑主语I与look之间为主动关系，故用现在分词，选C。