Thegirlhadhardlyrungthebell______

发布时间：2020-07-11 09:51:18

The girl had hardly rung the bell ________ the door was opened suddenly, and her friend rushed out to greet her．













A.before












B.until











C.as











D.since

网友回答

A解析根据“rung the bell”和“the door was opened”的发生先后，可以得出
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