单项选择题
Diana felt very much upset at （） to the party as she had longed to go for a long time.
A．having not been invited B．not having been invited C．not to be invite D．to be not invited
单项选择题 Last week I wrote to the hotel to book a room, but they （） yet.
单项选择题 Having been told that her son died in the accident, the old woman appeared very calm, as if nothing（）
单项选择题 （） ten minutes earlier, you wouldn't have missed the train．But you were late.
