Birds#39;singingissometimesawarningtootherbirds______away.A.tostayB.stayingC.stayedD.stayed
<p>问题：Birds#39;singingissometimesawarningtootherbirds______away.A.tostayB.stayingC.stayedD.stayed<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">卜桂花的回答：<div class="content-b">网友采纳 答案A 考察非谓语动词.本题考查非谓语动词做目的状语的情况,空格置于句中,主谓与todo之间无逗号间隔,译为“为了”.句意：鸟叫有时是为了警告其他的鸟远离他们.
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