他安静地坐在沙发上，读着一本书。

He sat ___quietly on the sofa, reading a book.

晚上大约八点，我正在客厅安静地看电视，这时电话响了。

It was about eight o'clock in the evening, I was watching TV ___quietly in my living-room when the phone rang.

她悄悄地走进房间，以免吵醒婴儿。

She walked ___quietly into the room so as not to wake the baby.