She heard planes ____ overhead.A.pass B.to pass C.to passing D.in passing
问题描述：
She heard planes ____ overhead.A.pass B.to pass C.to passing D.in passing
答
答案：A
结构：1.hear作为行为动词听见时,hear sb do sth表示“听到某人做了某事”或“经常听到某人做某事”,hear sb doing sth.表示“听到某人正在做某事”
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